STI Home
Diagnostic Manual, Engines, Volume 4

 Printable version
LOCATION:    9.3 ME - SFI (ME2.0)   >  11 Diagnosis - Diagnostic Trouble Code (DTC) Memory


Diagnosis - Diagnostic Trouble Code (DTC) Memory

Preliminary work: Engine Test, Adjustment, Engines (SMS, Job No. 07-1100)

WARNING!
Risk of severe injury when touching ignition parts which produce high voltages. Do not touch igntion components.
Persons with heart pacemakers are not to perform repairs on this type of ignition system. .

Electronic ignition systems produce dangerous high voltages on both the primary circuit and the secondary (ignition) circuits. Due to the high voltages produced, contact with any of the voltage carrying components can be dangerous to your health (burns, heart palpatations, cardiac arrest etc).
Igntion must be turned OFF prior to performing any repair work on the igntion system.
Do not come in contact or remove with any of the ignition components while the engine is cranking or idling.
Wear rubber soled shoes.
Disconnect connectors for CKP sensor at sensor or control module.
If repairs require that the ignition be turned on, then dangerous voltages will be present through out the entire ignition system.
No exposed metal connectors or sending units may be installed in the ignition wires.

WARNING!
Risk of fatal injury from being pulled into rotating vehicle parts.
Do not reach into rotating parts.
Wear closed and tight-fitting work clothes.
Protect vicinity of rotating vehicle components from unauthorized access.

WARNING!
Risk of explosion from fuel igniting, risk of poisoning from inhaling and swallowing fuel as well as risk of injury to eyes and skin from contact with fuel.
No fire, sparks, exposed flames or smoking.
Pour fuels only into suitable and appropriately marked containers.
Wear protective clothing when handling fuel.
Possible hazards
Risk of explosion, poisoning and injury
Fuels are highly inflammable and toxic if inhaled. Fuel may cause skin damage. Contact with gasoline fuel, for example, removes the natural oils on the skin. Fuel vapors are explosive, invisible and spread out at floor level. They are toxic if inhaled and have a narcotic effect in high concentrations.

Protective measures/guidelines
- Pay attention to national safety regulations and provisions.
- No fire, sparks, exposed flames or smoking.
- Ensure that the place of work is adequately ventilated.
- Never drain or pour in fuels over assembly pits.
- Store drained fuel in suitable and sealed containers.
- Immediately eliminate any fuel spills which have been spilled out of the container.

Note regarding diagnostic trouble code (DTC) readout:
The engine control module (N3/10) for the ME-SFI system is equipped with diagnostic trouble code (DTC) memory. Malfunctions are recognized and stored as DTC's and are distinguished as follows:

Malfunctions which are constantly present,
Intermittent contact malfunctions which have occured during a trip and have been stored.

The DTC memory is erased when the vehicle's battery is disconnected.

Malfunctions which are no longer present, are automatically erased as follows:

After three trips the "CHECK ENGINE" MIL goes out.
After an additional 40 warm-up periods the DTC is automatically erased.
"CHECK ENGINE" MIL is illuminated if the fault was stored on the previous driving-cycle.

A warm-up period or trip is defined as follows:

Warm-up period
Engine coolant temperature at start < 35° C,
Engine coolant temperature increases to > 70° C.

Trip
Engine running for > 20 minutes,
Engine oil temperature > - 7° C,
Engine speed > 500 rpm,
All emission related logic chain functions already there were checked during previous trips.

Driving-cycle (for a test) consists of:
Engine start
Completion of test,
Shutting engine: OFF

The stored DTC's can be read at the data link connector (X11/4) using the HHT only , with the ignition switched " ON " or with the "engine running".
Readout via an on-off ratio readout or impulse counter scan tool has been eliminated.

AS required b law, the DTC's can be read out using the Generic Scan Tool, by connecting scan tool to the diagnostic connector (X11/4), based on the SAE, ISO 9141-2 standards .

Conducting work on a vehicle with exposed flame
(e.g. welding etc.)
- Prior to commencing such work, remove appropriate parts of the fuel system and seal open fuel lines with plugs.

First-aid measures
Clean contaminated/exposed skin with water and soap.
Change contaminated clothing as quickly as possible.
If fuel gets into the eyes, rinse out eyes immediately with water, and contact a doctor, if necessary.

To Avoid Damage to the Ignition System
To avoid damage to the engine control module, connect/disconnect the control module connectors only with the ignition: OFF .
Circuit 1 of the ignition coil may not be shorted to ground, e.g. theft deterence.
Only original equipment should be installed in the ignition system.
Do not operate the ignition system at cranking speed unless the entire igntion harness is connected.
Do not perform any tests (grounding of ignition cable 4 disconnecting a spark plug connector or pulling cable 4 out of the ignition coil) at cranking or idle speed.

The high output side of the ignition system must carry at least 2 k of load (spark plug connector).
If assisting a disabled vehicle and it becomes necessary to perform an igntion spark test, perform this test only on one ignition/sark plug. Ensure a good ground connection to the spark plug.
ME - SFI: the ignition system is to be turned OFF, when cranking engine to perform compression tests, additionally, it is necessary to disconnect connector 2 from the control module.

Engine 120 has separate ignition and fuel injection system.



Readout via the impulse counter scan tool is not possible.

Note:
Symbol for emission related malfunctions which lead to the activation of the CHECK ENGINE MIL when a certain test cycle was performed and a fault was recognized.

Note regarding mixture preparation self-adaptation:
The Lambda control system determines the fuel injection duration so precisely that the fuel/air ratio is kept constant at Lambda level 1 (equals 14.7 kg air to 1 kg fuel) under all operating conditions.
Should malfunctions occur in the form of:
Intake air leaks,
Injector wear or carbon build-up,
Engine wear,
Transition resistance in MAF sensor,
Defective diaphragm pressure regulator,
Defective purge control valve,
the engine control module (ME-SFI, 2.0) automatically performs a mixture adjustment.
The degree of correction is constantly calculated and permanently stored. The self-adaptation is performed additive at idle and multiplicative under partial load. The correction towards rich or lean is ± 1.0 milliseconds (injection duration) at idle and the factor 0.68 - 1.32 at partial load. After repair work is performed, the engine control module will automatically adapt itself again.

Note regarding drive authorization system (DAS 3):
Model Year 1998, models 202, 208 and 210
Vehicles with ME-SFI (ME 2.0) are equipped with DAS 3. DAS is activated from the DAS control module (N54/1) via the CAN data bus to the engine control module.
Upon activation of the DAS, the engine control module renders the fuel injection system inoperative. The activation or deactivation is accomplished only with the electronic ignition key. As soon as the electronic ignition key is inserted in the steering lock, the DAS control module receives a signal and activates the engine control via the CAN data bus.
The locking and unlocking of the vehicle, using the mechanical key has no effect on the DAS system.
The engine control module and the DAS control module are "married" to one another through identification codes. The identification codes can not be erased (see HHT nominal values "DAS", menu selection 3/7). Therefore, swapping the engine or RCL control module from one vehicle to another is not possible!


If an exchange engine control module is installed for test purposes, up to 40 start attempts can be performed before the engine and DAS control modules "marry" to one another. Prior to perfroming the first start, the engine control module must be version coded using the HHT. Additionally, the code number and VIN must be entered (see HHT nominal values "DAS", menu selection 3/7).


Note regarding version coding:
The engine control module is equipped with a version coding feature. The coding must be performed with the Hand-Held Tester (automatically or manually, see Notes for HHT "Version coding" 11 /5) upon installation of a new control module.
The following vehicle version data must be determined for coding:

Vehicle model,
Engine,
Manual/automatic transmission
Non-catalytic converter (non-TWC),
Country version,
30 km/h limitation


Notes regarding automatic recognition of the mechanical end stop and wide open position of the throttle valve from the actuator:
The end stops of the throttle valve is determined by the actuator and stored in the engine control module.
After replacing the control module or actuator, the mechanical end stop and wide open position must again be determined and recorded.
Thereby allowing learned data to be erased with the HHT and new data to be learned. When the new engine control module is connected for the first time to circuit 30 (B+), the engine control module performs a self-adaptation of the actuator with the ignition "ON" (lower mechanical end stop and wide open position of the throttle valve).

Requirements for learning process:
Selector lever in position P/N,
Vehicle standing still,
Engine off,
Engine coolant temperature between 5° C and 100° C,
Accelerator pedal not applied.

When all requirements are met, turn ignition ON for at least 60 seconds , then turn ignition OFF for at least 10 seconds .
The learned value is stored in memory, only after the first 10 start cycles, provided the voltage supply has not been interrupted. Should the battery be disconnected after the 9th start cycle, the re-learning process must be performed again.
Notes regarding VSS sensor adaption for rough running engine test:
After the replacement of the ME-SFI control module, CKP sensor (L5), starter ring gear or motor mount, a sensor adaption must be performed:


Engine coolant temperature approx. > 70 oC,
Drive vehicle on road.
Vehicles up to 01/98:
With selector lever in position 4: Increase engine rpm to approx. 2,500 rpm and then coast until engine rpm is approx. < 1,500 rpm.
With selector lever in position 2: Increase engine rpm to approx. 6,100 rpm and then coast until engine rpm is approx. < 4,100 rpm.
Again increase engine rpm to approx. 6,100 rpm and then coast until engine rpm is approx. < 3,000 rpm.
Using the HHT, determine if VSS sensor adaption has taken place.
Vehicles as of 02/98:
With selector lever in position 3: Increase engine rpm to approx. 2,100 rpm and then hold a 50% engine load for approx. 30 seconds.
Using the HHT, determine if VSS sensor adaption has taken place.

Notes regarding performance/speedometer test:
Disconnecting the ESP/ASR/ETS/ABS control modules is not allowed. The engine control module and transmission control module rely on these modules to supply the VSS data via the CAN bus.

To disable the brake and engine regulation function of the ESP/ASR/ETS/ABS control modules:
(continued on 11/7)

Notes for HHT

A. Working without HHT
Ignition: OFF .
Connect HHT adapter to data link connector (X11/4).
Bridge sockets 1 and 6.
Engine: Start (BAS/ESP or BAS/ASR MIL must illuminate!).

B. Working with HHT
Ignition: OFF .
Disconnect front axle VSS sensor connector (BAS/ESP or BAS/ASR MIL must illuminate!).

When work is completed, reconnect VSS sensor connector and erase DTC's with HHT!

Fault search with HHT
Diagnostic trouble code (DTC) memory: Select "Current DTC's".
If the actual condition changes, e.g. when wiggling a connector, the change is reported optically and acoustically so that troubleshooting can be performed directly with the HHT.

Version coding with HHT
a) Before replacement of the engine control module, the existing code number must be read and stored with the HHT (menu selection 5 "Version coding"). After installation of the new control module, the previously read code number must be entered.

If returning a new control module to a PDC, the code number must be erased.

b) If the code number can not be read, the vehicle equipment/version must be determined, the corresponding code number obtained from the Spare Parts Microfiche (group 54) and manually entered with the HHT.

Loose connections
Loose connections are stored if they occur several times in a certain time period. Therefore, they can appear only as "Stored DTC's" and never as "Current DTC's".

Nominal values
All nominal values relative to the actual values shown on the HHT are listed in the Diagnostic Manual, Engines, Volume 1, section A.

Actual value for engine speed
For engine speed, the HHT display indicates the closed throttle speed (CTP) nominal value calculated by the control module on the left, and the rpm actual value on the right. Both values should differ from each other only slightly. Permissible tolerances are not yet determined.

Drive authorization system (DAS) X
Upon replacement the engine control module must be version coded using the HHT. Additionally, the code number and VIN must be entered (see HHT nominal values "DAS", menu selection 3/7).

Prerequisites for readout of DTC memory
WARNING!
Risk of severe injury when touching ignition parts which produce high voltages. Do not touch igntion components.
Persons with heart pacemakers are not to perform repairs on this type of ignition system.


Readout via the impulse counter scan tool is not possible.

Note:
Symbol for emission related malfunctions which lead to the activation of the CHECK ENGINE MIL when a certain test cycle was performed and a fault was recognized in the prior trip cycle. The CHECK ENGINE MIL will illuminate immediately if a "TWC damaging" missfire is found.

Preparation for Test:
1. Connect HHT with test cable to data link connector (X11/4),
readout DTC fault codes.
2. Review 22,
3. Review 11 , 21, 23, 24, 31 , 33,
4. Perform Test and adjustment of engine, see DM, Engines, Vol. 1, section B, if necessary.
5. Ignition: ON

DTC
  Possible cause Test step/Remedy 1)
SAE nomenclature Explanation
-   No malfunction in system   In case of complaint, perform 23 , 24, 25 or 26 in its entirety.
P 0 1 0 0   MAF circuit malfunction
Hot film MAF sensor (B2/5)
DTC description
23 4.0
11 /26
P 0 1 0 5 Only MAP circuit malfunction Pressure sensor (B28)
DTC description
23 6.0
11 /27
P 0 1 1 0   IAT circuit malfunction IAT sensor (in Hot film MAF sensor B2/5)
DTC description
23 5.0
11 /28
P 0 1 1 5   ECT circuit malfunction ECT sensor (B11/4)
DTC description
23 8.0
11 /29
P 0 1 2 0   Throttle position circuit malfunction Actual value potentiometer in EA/CC/ISC actuator (M16/6)
DTC description
25 3.0

11 /30
P 0 1 3 0   O2S 1 circuit malfunction A. O2S 1 (before TWC) (G3/4)
B. O2S 1 (before TWC) (G3/4), voltage increase insufficient
DTC description
23 11.0


11 /31
P 0 1 3 3   O2S 1 circuit slow response A O2S 1 (before TWC) (G3/4), ageing correction value exceeded
B O2S 1 (before TWC) (G3/4), ageing time period too long
C O2S 1 (before TWC) (G3/4), ageing O2S 1 sensor response too slow
DTC description
23 11.0





11 /32
P 0 1 3 5   O2S 1 heater circuit malfunction O2S 1 heater (before TWC) (G3/4)
DTC description
23 13.0
11 /34
P 0 1 3 6 Only O2S 2 circuit malfunction O2S 2 (after TWC) (G3/6)
DTC description
23 15.0
11 /31
P 0 1 4 0   O2S 1 circuit malfunction O2S 1 (before TWC) (G3/4)
DTC description
23 11.0
11 /31
P 0 1 4 1 Only O2S 1 heater circuit malfunction O2S 1 (after TWC) (G3/6)
DTC description
23 17.0
11 /34
P 0 1 5 0   O2S 1 circuit malfunction A O2S 1 heater (before TWC) (G3/3)
B O2S 1 heater (before TWC) (G3/3), voltage increase too slow
DTC description
23 10.0


11 /31
P 0 1 5 3   O2S 1 circuit slow response A O2S 1 heater (before TWC) (G3/3), ageing correction value exceeded
B O2S 1 heater (before TWC) (G3/3), ageing time period too long
C O2S 1 heater (before TWC) (G3/3), ageing O2S 1 sensor response too slow
DTC description
23 10.0





11 /32
P 0 1 5 5   O2S 2 heater circuit malfunction Left O2S 1 heater (before TWC) (G3/3)
DTC description
23 12.0
11 /34
P 0 1 5 6 Only O2S 2 circuit malfunction Left O2S 2 (after TWC) (G3/5)
DTC description
23 14.0
11 /31
P 0 1 6 0   O2S 2 heater circuit malfunction Left O2S 1 heater (before TWC) (G3/3)
DTC description
23 14.0
11 /31
P 0 1 6 1 Only O2S 2 heater circuit malfunction Right O2S 2 heater (after TWC) (G3/5)
DTC description
23 16.0
11 /34
P 0 1 7 0   Fuel trim malfunction A Self adaptation of fuel mixture "partial load", right cylinder bank, at limit from engine control module (N3/10).
B Self adaptation of fuel mixture "CTP", right cylinder bank, at limit from engine control module (N3/10).
DTC description
Intake air leak, injectors, diaphragm pressure regulator, engine wear.




11 /35
P 0 1 7 3   Fuel trim malfunction A Self adaptation of fuel mixture "partial load", left cylinder bank, at limit from engine control module (N3/10).
B Self adaptation of fuel mixture "CTP", left cylinder bank, at limit from engine control module (N3/10).
DTC description
Intake air leak, injectors, diaphragm pressure regulator, engine wear.




11 /35
P 0 2 0 1   Injector circuit malfunction - cyl. 1 Injector (Y62y1) - cylinder 1
DTC description
23 18.0
11 /36
P 0 2 0 2   Injector circuit malfunction - cyl. 2 Injector (Y62y2) - cylinder 2
DTC description
23 19.0
11 /36
P 0 2 0 3   Injector circuit malfunction - cyl. 3 Injector (Y62y3) - cylinder 3
DTC description
23 20.0
11 /36
P 0 2 0 4   Injector circuit malfunction - cyl. 4 Injector (Y62y4) - cylinder 4
DTC description
23 21.0
11 /36
P 0 2 0 5   Injector circuit malfunction - cyl. 5 Injector (Y62y5) - cylinder 5
DTC description
23 22.0
11 /36
P 0 2 0 6   Injector circuit malfunction - cyl. 6 Injector (Y62y6) - cylinder 6
DTC description
23 23.0
11 /36
P 0 3 0 0   Random misfire detected A Random misfire
B Random misfire, TWC damaging

DTC description
24 11.0 - 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 0 1   Cylinder 1 misfire detected A Cylinder 1 misfire
B Cylinder 1 misfire, TWC damaging


DTC description
24 11.0
24 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 0 2   Cylinder 2 misfire detected A Cylinder 2 misfire
B Cylinder 2 misfire, TWC damaging


DTC description
24 12.0
24 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 0 3   Cylinder 3 misfire detected A Cylinder 3 misfire
B Cylinder 3 misfire, TWC damaging


DTC description
24 13.0
24 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 0 4   Cylinder 4 misfire detected A Cylinder 4 misfire
B Cylinder 4 misfire, TWC damaging


DTC description
24 14.0
24 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 0 5   Cylinder 5 misfire detected A Cylinder 5 misfire
B Cylinder 5 misfire, TWC damaging


DTC description
24 15.0
24 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 0 6   Cylinder 6 misfire detected A Cylinder 6 misfire
B Cylinder 6 misfire, TWC damaging


DTC description
24 16.0
24 17.0
36 1.0 - 2.0
Compression pressure
11 /37
P 0 3 2 5   KS 1 circuit malfunction Right KS 1 (A16g1)

DTC description
Wiring, connector,
A16g1
11 /40
P 0 3 3 0   KS 2 circuit malfunction Left KS 2 (A16g2)

DTC description
Wiring, connector,
A16g2
11 /40
P 0 3 3 5   CKP sensor circuit malfunction CKP sensor (L5)
DTC description
24 9.0
11 /41
P 0 3 4 1   CMP sensor circuit range/performance Camshaft Hall-effect sensor (B6/1)
DTC description
24 10.0
11 /41
P 0 3 7 0   Angle deviation between camshaft and crankshaft Angle deviation between camshaft and crankshaft Check basic adjustment of camshaft
P 0 4 0 0   Exhaust gas recirculation flow malfunction Exhaust gas recirculation malfunction (logic chain)
DTC description
23 27.0

11 /42
P 0 4 1 0 Only Air injection system malfunction AIR system malfunction (logic chain)
DTC description
23 24.0 - 26.0
11 /43
P 0 4 2 2   TWC (right) efficiency below threshold TWC efficiency below threshold
DTC description
Replace right TWC
11 /45
P 0 4 3 2   TWC (left) efficiency below threshold TWC efficiency below threshold
DTC description
Replace left TWC
11 /45
P 0 4 4 0 Only EVAP system malfunction EVAP malfunction (logic chain)
DTC description
23 30.0 - 31.0
11 /47
P 0 4 4 1 Only EVAP system malfunction (function) Purge control valve (Y58/1) function
DTC description
23 29.0 - 30.0
11 /47
P 0 4 4 2 Only EVAP system leak detected (small leak) EVAP system, small leak
DTC description
23 31.0
11 /47
P 0 4 4 3   EVAP system purge control valve circuit malfunction Purge control valve (Y58/1)
DTC description
23 29.0
11 /51
P 0 4 4 6 Only EVAP system vent control malfunction A. Activated charcoal canister shut-off valve (Y58/4) (logic chain)
B. End stage activated charcoal canister shut-off valve (Y58/4)
DTC description
23 32.0 ,
23 33.0 ,
N3/10

11 /52
P 0 4 5 0 Only EVAP system pressure sensor malfunction A. Fuel tank pressure sensor (B4/3) electrical fault
B. Fuel tank pressure sensor (B4/3) electrical fluctuations
DTC description
23 33.0
Charcoal canister plugged.


11 /53
P 0 4 5 5 Only EVAP system leak detected (large leak) EVAP system, large leak
Fuel tank pressure sensor (B4/3) (voltage supply)
DTC description
23 31.0
23 33.0

11 /48
P 0 4 6 0   Fuel level sensor circuit low input
Fuel tank level too low
DTC description (missfire)
Readout instrument cluster memory
11 /46
P 0 5 0 0   VSS sensor malfunction A VSS left front
B VSS left rear
DTC description (speed signal)
Test ASR, ESP see DM, Chassis and Drivetrain, Vol. 3, section 9.3 and 10.2
11 /54
P 0 5 0 7   ISC rpm higher than expected Idle control system, unplausible
DTC description
25 1.0 - 3.0
11 /55
P 0 5 6 0   System voltage malfunction Voltage supply to engine control module (N3/10)
DTC description (voltage supply at engine control module)
23 1.0 - 2.0

11 /56
P 0 5 6 5   Cruise control switch CC switch with variable speed (S40/4) Not
P 0 6 0 0   Serial communication link malfunction CAN bus from ESP/SPS control module (N47-5)
DTC description (CAN distorted)
23 34.0

11 /57
P 0 6 0 4   Internal control module random Access memory (RAM) error A Engine control module (N3/10)
B Engine control module (N3/10)
(N3/10)
P 0 6 0 5   Internal control module read only memory (ROM) error Engine control module (N3/10) (N3/10)
P 0 7 0 0   Transmission control system malfunction

Gear unplausi. or transmission leak,
Command valve sticks in pressure position
Read DTC memory of transmission control module.
DTC description

DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /58

11 /59
P 0 7 0 2   Transmission control system electrical

Transmission control module
Solenoid valves, voltage supply
Read DTC memory of transmission control module.
DTC description
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /60
11 /61
P 0 7 1 5   Input/turbine speed sensor circuit malfunction, RPM sensor function
Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /62
P 0 7 2 0   Output speed sensor circuit malfunction,
(CAN fault)
Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /64
P 0 7 3 0   Incorrect gear ratio Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /65
P 0 7 4 0   Torque converter lock-up clutch circuit malfunction Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /66
P 0 7 4 3   Torque converter clutch circuit electrical Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /67
P 0 7 4 8   Pressure control solenoid electrical,
Modulating press. reg. solenoid valv.,
Shift pressure reg. solenoid valve
Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /68
11 /69
P 0 7 5 3   Shift solenoid A electrical
1-2/4-5 solenoid valve
Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /70
P 0 7 5 8   Shift solenoid B electrical
2-3 shift solenid valve
Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /71
P 0 7 6 3   Shift solenoid C electrical
3-4 shift solenoid valve
Read DTC memory of transmission control module.
DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
11 /72
P 0 8 0 1   Engine/climate control electric cooling fan malfunction Engine/climate control electric cooling
fan (M4/3)
23 36.0
P 0 8 0 2   Resonance intake mainfold switchover valve malfunction Resonance intake mainfold switchover valve (Y22/6) 23 28.0
P 0 8 0 9   Angle deviation between camshaft and crankshaft Angle deviation between camshaft and crankshaft Check basic adjustment of camshaft.
P 0 8 1 1   CAN from electronic ignition lock CAN from electronic ignition lock. 23 34.0
P 1 0 3 1   O2 sensors (G3/3, G3/4) reversed O2 sensors (G3/3, G3/4) reversed. Check proper connection of O2 sensors in ETM.
P 1 1 7 7   Oil sensor Oil sensor (level, temperature, quality)(B40), Oil temperature implausible. 23 35.0
P 1 1 7 8   Oil sensor Oil sensor (level, temperature,
quality)(B40), Oil level implausible.
23 35.0
P 1 1 7 9   Oil sensor Oil sensor (level, temperature, quality)(B40), Oil quality implausible. 23 35.0
P 1 1 8 0   Oil sensor Oil sensor (level, temperature, quality)(B40), Oil temperature too high. 23 35.0
P 1 1 8 1   Engine/climate control electric cooling fan Faulty 23 36.0
P 1 1 8 5   Oil sensor Oil sensor (level, temperature, quality)(B40), water in oil. 23 35.0
P 1 1 8 6   Fuel safety shut-off recognized EA/CC/ISC actuator (M16/6) 25 3.0 - 4.0 ,
EA/CC/ISC actuator (M16/6) sticks or jammed,
Check intake system for residue.
P 1 2 2 5   Resonance intake manifold switchover valve Resonance intake manifold switchover valve (Y22/6) 23 28.0
P 1 2 3 3   Throttle valve setting element Throttle valve setting element (M16/6) sticks due to icing Replace element.
P 1 3 8 6   Knock sensor control from ECM (N3/10) at end stop Knock sensor regulation from engine control module (N3/10) at end stop

DTC description
1. Increased knock tendency due to bad fuel, carbon in combustion chamber or mechanical damage.
11 /73
P 1 4 0 0   EGR valve vacuum transducer EGR valve vacuum transducer (Y31/1)
faulty
DTC description
23 27.0

11 /74
P 1 4 2 0 Only AIR pump switchover valve AIR pump switchover valve (Y32)
DTC description
23 25.0
11 /75
P 1 4 5 3 Only AIR relay module, AIR pump Relay module, AIR pump (K40/4k3) in relay module (K40)
DTC description
23 24.0

11 /75
P 1 4 9 1     Refrigerant pressure in A/C system too high Check automatic A/C system.
P 1 5 4 2   Pedal value sensor Pedal value sensor (B37)
DTC description
25 1.0 - 2.0
11 /76
P 1 5 7 0   CAN signal from DAS control module to engine control module A. Start attempted with "locked" DAS
B. CAN signal from DAS control module (N54/1) to engine control module (N3/10) interrupted.
C. Engine control module (ME-SFI) and DAS control module are not compatible.
User error,
Check correct operation of DAS, see DM, Body and Accessories, Vol. 2, 4.9, 4.10
23 34.0
Check control modules and part no.
P 1 5 8 0   EA/CC/ISC actuator Throttle valve setting element (M16/6)
DTC description
25 3.0 - 4.0
11 /77
P 1 5 8 4   Stop lamp switch Stop lamp switch (S9/1)
Test ETS, ASR see DM, Chassis & Drivetrain, Vol. 3, 10.2
P 1 6 0 3   CAN from EIS   25 34.0
P 1 6 0 5     Poor road/traction condition recognition signal (via comparison of VSS rpm signals Test ASR/ESP see DM, Chassis and Drivetrain, Vol. 3, Section 9, 10.2
P 1 6 4 2     Engine control module incorrectly coded (coded for MT, vehicle has AT) Check version coding and correct,
see 11
P 1 6 4 3     Engine control module incorrectly coded (coded for MT, vehicle has AT)
or
No CAN transmission from transmission control module (N15/3)
Check version coding and correct,
see 11,
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2, 23
P 1 6 4 4     Transmission version can not be checked due to low voltage at transmission control module (N15/3) Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23
P 1 7 4 7   CAN signal from ETC A. CAN failure: Transmission protection malfunction from transmission control module (N15/3)
B. CAN failure: Instrument cluster

DTC description
Test ETC, see DM, Chassis & Drivetrain, Vol. 1, section 2.3, 23

Test instrument cluster (A1), see DM, Body & Accessories, Vol. 1
11 /57
1) Observe Preparation for Test, see 22 .

DTC P 0 1 0 0 Hot film MAF sensor (B2/5)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Limit signals, MAF (B2/5)
Magnitude: lower limit
Lower threshold limit
Upper threshold limit
Test duration
At idle approx. 4-35 kg/h (1.3-1.7 v)
min. 16kg/h, if throttle plate angle is greater than 14°
approx. 50-900 kg/h, ECM map based on engine rpm and throttle plate angle.
approx. 5 sec. per limit.
Tested pre-requisites No fault in throttle plate adjustment

DTC P 0 1 0 5 Pressure sensor (B28)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Limit values, Pressure sensor (B28)
Magnitude: lower limit
Lower threshold limit
Upper threshold limit
Test duration
min -60 mbar, with engine rpm over 1300 rpm
approx. 0 mbar, if throttle plate angle is greater than 80°
approx. 500-1200 mbar, ECM map dependent on engine rpm and throttle plate angle.
approx. 5 sec. per limit.
Test pre-requisites Lock time period of 30 seconds after start exceeded and no fault in the throttle plate angle.

DTC P 0 1 1 0 IAT sensor (in Hot film MAF sensor B2/5)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Limit values, IAT sensor
Lower threshold limit
Upper threshold limit
Test duration
> 300k (approx. -50°C)
< 92 (approx. +150°C)
approx. 1 sec.
Hint With faults, the reserve value of +20°C is used. Should the signal become plausible, the signal from the IAT is subsequently used again.

DTC P 0 1 1 5 ECT sensor (B11/4)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency, test duration Continuously
Tested signal or condition Limit values, ECT sensor (B11/4)
Lower threshold limit
Upper threshold limit
Plausibility
> 80 k (approx. - 39°C)
< 45 (approx. +170°C)
The temperature raise is compared to a stored baseline value. Independent of start temperature and engine rpm, a value of +15°C after 120-1200 sec. must be attained.
With faults, the reserve value from the temperature base value is used. Should the signal become plausible, the signal from the ECT sensor is subsequently used again.

DTC P 0 1 2 0 Actual values-potentiometer in EA/CC/ISC actuator (M16/1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage supply, Actual values-potentiometer 1 or 2
Actual values potentiometer 1
Actual values potentiometer 2
Voltage must be between 0.275 V and 4.83 V
Voltage must be between 0.176 V and 4.74 V

DTC P 0 1 3 0
DTC P 0 1 3 6
P 1 4 0
DTC P 0 1 5 0
DTC P 0 1 5 6
DTC P 0 1 6 0
Right 02S 1 (before TWC)
Right 02S 2 (after TWC) (only )
Right 02S 1 (before TWC)
Left 02S 2 (before TWC)
Left 02S 2 (after TWC) (only )
Left 02S 1 (before TWC)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition A. Limit values, 02 sensor signal
B. Sensor status exchange
A. 02 sensor limit value signal
Lower threshold limit value
Upper threshold limit
Test duration
B. Sensor status exchange

<-0.15V
> 1.5 V
approx. 5 sec.
With 02 heater on (approx. 220sec.), the sensor signal does not remain in the voltage window
(0.4-0.6V) for longer then 15 seconds.
Test pre-requisites - engine rpm approx. 1000-2000
- engine load approx. 15-50%
- catalytic converter temperature > 380°C
- release Lambda regulation

Also see: 11 /78
Via testing, all electrical connection faults of the 02 sensors before and after the catalytic converters are recognized (harness open circuits and shorts/high ohmic valueshorts to ground or positive).
The 02 sensor signal wire has a high ohmic short circuit or limited voltage increase.
The 02 sensor signal wire has a open circuit.
With a cold 02 sensor: a high ohmic short circuit to positive or a short to ground on control module ME

If the 02 sensor signal wire ground is shorted to positive, the control module ME will be destroyed.

DTC P 0 1 3 3
DTC P 0 1 5 3
Right 02S 1 (before TWC)
Left 02S 2 (before TWC)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition A. Correction factor exceeded
B. Time period too long
A. correction factor exceeded
B. Time period too long
Test duration
approx. ±1.2 sec.
> 5 sec. (average value via 15 measurements)
up to 190 sec.
Test pre-requisites - engine rpm approx. 1000-2000
- engine load approx. 15-50%
- catalytic converter temperature > 380°C
- Lambda correction effective
- no faults with effective function of catalytic converter
- no faults with 02 sensor heating

DTC P 0 1 3 3
DTC P 0 1 5 3
Right 02S 1 (before TWC)
Left 02S 2 (before TWC)
Test sequence The engine control module determines the the mid value of Lambda. This value is compared to the stored value for optimal exhaust gas value. With numerous of excessive values, a correction value for the lambda regulation is determined. With the correction factor (value with a new 02 sensor approx 0) the aging of the 02 sensor before the catalytic converter is equalized within certain limits With exceeded values beyond the correction values, the 02 sensor before the catalytic converter must be replaced. Additionally, the timespan of the sensor before the catalytic converter is evaluated. If there is no 02 sensor condition interexchange, then the lambda regulation is not active and the two sensor regulation will not take place. With the 02 sensor signals after the catalytic converter, the effectiveness of the catalytic converter is monitored.

Also see: 11 /79
Time span for 02 sensor before catalytic converter too long: 02 sensor located after the catalytic converter is no longer monitored.
Correction factor of the 02 sensor before the catalytic converter exceeded: the 02 sensor after the catalytic converter is to be further monitored.
If a fault is for both the 02 sensor before and after the catalytic converter is recorded, then usually the 02 sensor behind the catalytic converter is faulty.

DTC P 0 1 3 5
DTC P 0 1 4 1
DTC P 0 1 5 5
DTC P 0 1 6 1
Right 02S 1 (before TWC)
Right 02S 2 (after TWC)
Left 02S 2 (before TWC)
Left 02S 2 (after TWC)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Calculated resistance value of the 02 sensor heating
Lower threshold limit
Upper threshold limit
< 2.0 (approx. 6 A at 12 V)
> 10 (approx. 1.2 A at 12 V)
Fault code is also set, if the time period of the 02 sensors suddenly exceeds 25 seconds within a driving-cycle.
Test pre-requisites Engine running, 02 sensor heating ON and a heating time of 220 sec. has elapsed.

DTC P 0 1 7 0
DTC P 0 1 7 3
Right cylinder bank
Left cylinder bank
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, activation of Check Engine (MIL), after two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Limit values of self adaption of mixture formation
A. Limit threshold value for idle
B. Limit threshold value for part load
approx. ± 1.0 ms (approx. 25% of injection time at idle)
0.7-1.3 factor

Also see: 11 /80
For the self adaption of the mixture formation to attain a new value, a drive time of approx. 30 minutes with lambda regulation is required. The coolant temperature at time of start must be < 60°C.

DTC P 0 2 0 1
DTC P 0 2 0 2
DTC P 0 2 0 3
DTC P 0 2 0 4
DTC P 0 2 0 5
DTC P 0 2 0 6
Injector 1 (Y62y1)
Injector 2 (Y62y2)
Injector 3 (Y62y3)
Injector 4 (Y62y4)
Injector 5 (Y62y5)
Injector 6 (Y62y6)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage and amp supply to each indivdual injector
Test requirements: Battery voltage between 8 - 17 V Voltage and amp supply to each indivdual injector
Limit threshold value: short to positive
Limit threshold value: short to ground
Wire has open circuit
Test duration
> 4.2A
< 2.5 V
no voltage at injector, approx. 4 - 8 volts at load free output of the engine control module ME
approx. 1 sec.
The activation of each indivdual injector is checked for harness opens and shorts to ground or positive.
Shorts to ground and open circuits are recognized with a locked endstage, where else a short to positive is recognized with a conducting endstage.
With a fault detected, the endstage is immediately no longer activated.
With a short to ground, the indivdual injector remains continuously open.

DTC P 0 3 0 0
DTC P 0 3 0 1
DTC P 0 3 0 2
DTC P 0 3 0 3
DTC P 0 3 0 4
DTC P 0 3 0 5
DTC P 0 3 0 6
DTC P 0 4 6 0
DTC P 0 4 6 2
Random misfire
Misfire, cyl. 1
Misfire, cyl. 2
Misfire, cyl. 3
Misfire, cyl. 4
Misfire, cyl. 5
Misfire, cyl. 6
Fuel level in fuel tank too low
Fuel level in fuel tank too low
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, activation of Check Engine (MIL), after two in sequence driving-cycles with faults
A. Misfire (emissions limit)
Activation of Check Engine (MIL), after two in sequence driving-cycles with faults
B. TWC damaging
Activation of Check Engine (MIL), immediately upon misfiring
Test frequency Continuously
Tested signal or condition Count of recognized combustion misfires (recognition via uneven running engine evaluation)
Limit threshold values: A. max. 20 combustion misfires within 1000 engine revolutions
B. max. 4-35 combustion misfires within 200 engine revolutions (ECM map dependent of engine rpm and load i.e. 4 misfires at medium engine rpm and load, 35 misfires at idle w/o load)

DTC P 0 3 0 0
DTC P 0 3 0 1
DTC P 0 3 0 2
DTC P 0 3 0 3
DTC P 0 3 0 4
DTC P 0 3 0 5
DTC P 0 3 0 6
DTC P 0 4 6 0
DTC P 0 4 6 2
Random misfire
Misfire, cyl. 1
Misfire, cyl. 2
Misfire, cyl. 3
Misfire, cyl. 4
Misfire, cyl. 5
Misfire, cyl. 6
Fuel level in fuel tank too low
Fuel level in fuel tank too low
Test pre-requisites - engine rpm approx. 450-6000 rpm
- engine rpm variation less than 1900/rpm per sec.
- engine load variation < 50% per second
- engine start undertaken less then 5 seconds ago
- no ESP interaction
- CKP sensor adaption in coast range has been accomplished
- no rough road conditions recognized (via CAN from ASR/ESP control modules, attained via
comarison of VSS signals)
- no faults from camshaft Hall-effect sensor (B6/1)
- no injector shutoff

DTC P 0 3 0 0
DTC P 0 3 0 1
DTC P 0 3 0 2
DTC P 0 3 0 3
DTC P 0 3 0 4
DTC P 0 3 0 5
DTC P 0 3 0 6
DTC P 0 4 6 0
DTC P 0 4 6 2
Random misfire
Misfire, cyl. 1
Misfire, cyl. 2
Misfire, cyl. 3
Misfire, cyl. 4
Misfire, cyl. 5
Misfire, cyl. 6
Fuel level in fuel tank too low
Fuel level in fuel tank too low
If too many misfires occurr in one cylinder, then that cylinder will be turned off (cylinder selective fuel shut-off).
Misfire due to ignition system faults:
If ignition does not occur, misfires will result. If there are faults stored in the ignition system, in addition to the misfire, start at the ignition system first. Max. rough running per cylinder is 3m2 if this value is exceeded, then proceeed as follows:
1. turn off one of the ignition circuits, using the SDS/HHT
2. Observe rough running of the affected cylinder: if the value has changed very little, (up to approx. 2m2, then the remaining ignition circuit is OK. If the value has changed considerably, (beyond 2m2
then the activated ignition circuit has a fault: spark plug, igntion lead or igntion coil.
Misfire due to fuel starvation:
With recognized misfires, with a low fuel level in the fuel tank the DTC codes P 0 4 6 0 and P 0 4 6 2
are set, thus this information indicates a misfire due to low fuel level in fuel tank.
Misfire due to additional causes:
Misfires can be caused by the fuel injection system, additional faults may be stored, mechanical faults of the engine must be considered as well.

DTC P 0 3 2 5
DTC P 0 3 3 0
Right KS (A16g1)
Left KS (A16g2)
Fault memory and activation of Check Engine (MIL) Fault is immediately stored in memory
Check Engine (MIL) is not activated
Test frequency Continuously
Tested signal or condition Knock sensor signal (in control module determined comparison via amplitude)
Lower threshold limit
Upper threshold limit
approx. 0.10V
approx. 4.98V
Test pre-requisites - engine at operating temperature
- engine rpm > 2000/rpm
- engine load > 40%
- knock regulation not active
With faults, a safety ignition timing retart setting on all cylinders.

DTC P 0 3 3 5 CKP sensor signal (L5)
Fault memory and activation of Check Engine (MIL) Two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition CKP sensor (L5) signal (flywheel tooth count)
Lower threshold limit
Upper threshold limit

Test duration
(60 -2 teeth) - 1 tooth
60 -2 teeth) + 1 tooth

aprox. 5 sec.

DTC P 0 3 4 1 CMP sensor signal (B6/1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition CMP sensor (B6/1)
Plausibility
No signal:
Count:

within 2 engine revolutions, the signal must change from 0 to 1 and from 1 to 0
max. of 1 signal changeover (1 to 0 and 0 to 1) per engine revolution.
Test pre-requisites engine rpm 25 - 600
no faults from CKP sensor (L5).
To minimize damage to the catalytic converter, a missing signal from the Hall sensor or improper synchronization, results in fuel shutoff.

DTC P 0 4 0 0 EGR valve vacuum transducer (Y31/1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency One per drive
Tested signal or condition Intake manifold pressure
Limit threshold value
Test duration
Vacuum in manifold must decrease by 54 mbar when exhaust gas recirculation flow is active
approx. 2 sec.
Test pre-requisites - no fault from EGR valve vacuum transducer (Y31/1)
- no fault from pressure sensor (B28)
- injector shut off is active
- engine rpm approx. 900-1700 and constant
- vehicle altitude location is under 8000 ft
If the requirement are met, then the intake manifold pressure is measured and subsequently the exhaust gas recirculation is briefly activated.

DTC P 0 4 1 0 Air injection system
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Once per driving cycle.
Tested signal or condition Lambda regulation
Limit threshold value
Test duration
Lambda regulation factor approx. +23% ("rich" - detent stop)
approx. 10 sec.
Test pre-requisites - engine at idle
- vehicle stationary
- air injection pump has been activated 1x after engine start
- no faults with voltage supply to exhaust gas recirculation valve (Y31/1), air pump switchover valve (Y32) and electrical air pump (M33)
- no faults with exhaust gas recirculation system
- no faults with throttle setting element (M16/6)
- no combustion misfires
- no faults with 02 sensor before catalytic converter, aging
- no faults with CAN Databus
- self adaption of mixture formation not at limit values
- outside air pressure over approx. 780 hPa (since the test will not be done above 8000 ft)
- engine coolant temperature < 90°C
- Lambda regulation released
- A/C is off

DTC P 0 4 1 0 Air injection system
Test sequence With the start of the logic chain, all functions for the self adaption of the mixture formation are locked. The exhaust gas recirculation valves are closed and the current lambda regulation factor is attained. Thereafter air injection follows. The mixture must lean out. As a result the lambda regulation factor reacts with an increase of approx. 23%.
If the requirements change during the test, the test is as a result stopped and is later restarted again.

DTC P 0 4 2 2
DTC P 0 4 3 2
TWC right efficiency
TWC left efficiency
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage relationship (amplitudes) between sensors before catalytic converters and sensors after catalytic converters
Limit threshold value

Test duration
02 sensor signal after catalytic converter is max. 75% of 02 sensor signal before catalytic converter

approx. 170 sec.
Test pre-requisites - engine rpm 1000-2700
- engine load approx. 22% to 52%
- catalytic converter temperature > 380°C
- lambda regulation released and lambda > 0.4
- no faults with 02 sensors (signal, heating, aging)
- no combustion misfires

DTC P 0 4 2 2
DTC P 0 4 3 2
TWC left efficiency (continued)
TWC right efficiency

Also see: 11 /81
The catalytic converter is evaluated for its oxygen storing capability. Within the required engine rpm and load ranges many mesurements need to be accomplished. The results are compared to a map and from that faults are recognized. The amplitude of the 02 sensors after the catalytic converters must be smaller then the amplitude of the 02 sensors before the catalytic converters. (Hint; if for example, a monolith was left out within the catalytic converter, then the 02 sensors signals both before and after the catalytic converters would be identical).
If the fault codes for the catalytic converter and the 02 sensor before stored at the same time, then replace the 02 sensor before the catalytic converter first. If thereafter, no more catalytic converter fault is present, then the catalytic converter is slightly reduced in effectiveness, but does not need to be replaced.

DTC P 0 4 4 0
DTC P 0 4 4 1
DTC P 0 4 4 2
DTC P 0 4 5 5
Evap. system malfunction (leak)
Purge control valve (function)
Evap. system leak (small)
Evap. system leak (large)
Fault memory
Activation of Check Engine (MIL) or motor diagnostics
After completion ot test cycle time period and faults
Two in sequence driving-cycles with faults
Test frequency Once per drive-cycle
Tested signal or condition Pressure values per fuel tank pressure sensor (B4/3)
Large leak test
Small leak test

Test duration
Vacuum of approx. 0.4 mbar per second is not attained.
Loss of vacuum within closed system is 15% greater the achieved vacuum values during the large leak test above.
approx. 30 sec

DTC P 0 4 4 0
DTC P 0 4 4 1
DTC P 0 4 4 2
DTC P 0 4 5 5
Evap. system malfunction (leak)
Purge control valve (function)
Evap. system leak (small)
Evap. system leak (large)
Test pre-requisites - engine at idle
- vehicle stationary
- lock time of approx. 16 min. after engine start has elapsed or fuel mixture adaption occurrs.
- lambda regulation released
- air injection is not active
- outside air pressure over approx. 780 hPa (since the test will not be done above 8000 ft)
- little saturation of activated charcoal cannister
- lambda is > 0.9 during the testing
- with a fuel tank level of <1/4 and > 3/4 only the large leak test is undertaken
- if the fuel within the fuel tank sloshes greatly (large pressure variations), the fuel tank pressure sensor (B4/3) rocognizes same and stops the test.
- no fault at activated charcoal cannistershut-off valve (Y58/4)
- no fault at fuel tank pressure sensor (B4/3)
- no fault with fuel level sensor
- no fault with purge valve (Y58/1) function (open/close)
The DTC P 0 4 5 5 is stored in memory, if the fuel tank pressure sensor (B4/3) is defective.

Function
The leak test (logic chain) is acomplished in two phases:
Large leak test
Small leak test
 

 

Function (continued)
1. Large leak test
The activated charcoal cannister shut-off valve (Y58/4) is closed and the purge valve (Y58/1) is opened. As a result, the intake manifold vacuum reaches the fuel tank and is evaluated by the fuel tank pressure
sensor (B4/3).
If no vacuum is established (i.e. approx. -4mbar within 10 seconds) a large leak is present (fuel tank cap open, loose hose connection etc.).


If the engine control module (N3/10) recognizes a large leak within the fuel system, the fuel reserve indicator lamp (A1e4) in the instrument cluster will blink as a result.
 
2. Small leak test
If the large leak test results in no fault then a small leak test is performed. Once a vacuum of -7mbar is achieved, the purge control valve (Y58/1) is closed and the vacuum is evaluated for an additiuonal 30 seconds.
The vaccum must remain consistant during this time period. Should a leak be detected, then a fault is recognized.
After the test, the activated charcoal cannister shut-off valve (Y58/4) is opened.
The purge control valve (Y58/1) is checked for proper function via activation at the same time.

DTC P 0 4 4 3 Purge control valve (Y58/1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage or amps at purge control valve (Y58/1)
Limit threshold values
Short to ground
Short to positive
Open circuit
Test duration

Voltage < 4 V
Amps > 4.2 A
No voltage at purge control valve (approx. 4-8 V at output stage).
approx. 1 second
The activation of the purge control valve is checked for harness opens and shorts to ground or positive. Shorts to ground and open circuits are recognized with a locked endstage, where else a short to positive is recognized with a conducting endstage.
With a fault detected, the endstage is immediately no longer activated.

DTC P 0 4 4 6 Activated charcoal cannister shut-off valve (Y58/4)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage supply at activated charcoal cannister shut-off valve (Y58/4)
Limit threshold values, voltage supply
Short to ground
Short to positive
Open circuit

Voltage < 4 V
Amps > 4.2 A
No voltage at activated charcoal cannister shut-off valve (approx. 4-8 V ) at output stage.
The activation of the activated charcoal cannister shut-off valve is checked for harness opens and shorts to ground or positive. Shorts to ground and open circuits are recognized with a locked endstage, where else a short to positive is recognized with a conducting endstage.
With a fault detected, the endstage is immediately no longer activated.

DTC P 0 4 5 0 Fuel tank pressure sensor (B4/3)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Once per driving-cycle
Tested signal or condition Fuel tank pressure sensor (B4/3) electrical fault
Fuel tank pressure sensor (B4/3) signal flucuations
A
Lower threshold limit
Upper threshold limit
Test duration
B
Signal sequence

> 4.7 V (relates to approx. 35 mbar positive pressure)
< 0.1 V (relates to approx. -60 mbar vacuum)
approx. 10 sec.

The fuel tank pressure, with active recirculation can pulsate at max. 2 mbar (0.1 V), otherwise the activated charcoal cannister maybe plugged.
Test pre-requisites - engine at idle
the test is run independent of the evap. system leak test The sensor is tested for an electrical fault (short circuit, short to ground or positive). If the sensor voltage is below or above values, a fault is present.
Base line for fuel tank pressure sensor: -50 mbar approx. 0.5 V; 0 mbar approx. 3.0 V;
+30 mbar approx. 4.5 V.
If the sensor is "hung",a constant signal yet plausible signal can be present.
In this case, a large leak will be present in the evap. system.

DTC P 0 5 0 0 VSS signal
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults, stored in DTC memory
Check Engine (MIL) is not activated (illuminated)
Test frequency Continuously
Tested signal or condition A VSS signal left front
B VSS signal left rear
Limit threshold values
Test duration

Plausibility

Test duration
After approx. 8 miles per hr vehicle speed, the VSS signals must be recognized
approx. 5 sec.

Requirement after approx. 25 miles per hr vehicle speed: VSS front minus VSS rear < ± 18 miles per hr
approx. 30 sec.
Test pre-requisites - engine rpm approx. 2500-4500
- engine load > 40%
- transmission selector lever in D
The wheel speed (VSS signal) is recognized and evaluated via the ASR or ESP control module (G-wagen ABS). The ME-SFI control module receives the VSS signal via the CAN databus.
Readout DTC memory (i.e. driving on dynometer) for ME-SFI and ASR or ME-SFI and ESP control modules.

DTC P 0 5 0 7 ISC control system unplausible
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Engine rpm
Upper threshold limit value
Lower threshold limit
test duration
Nominal value + 200 rpm
Nominal value - 100 rpm
approx. 30 sec.
If the activation of the actuator motor within actuator (via the ME control module) is performed, then the new value must be attained within 25 sec.
Test pre-requisites - Engine temperature > 20° C
- Climate control system: OFF
- Vehicle stationary

DTC P 0 5 6 0 Battery voltage at ME-SFI control module
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Battery voltage at the control module ME
Limit threshold value
Test duration
Voltage must be between approx. 8 V and 17.5 V
approx. 5 sec.
Test pre-requisites - Time period of 180 sec. has elapsed since start

DTC P 0 6 0 0
DTC P 1 7 4 7
CAN bus from ASR/ESP control module (not on G-Wagen)
CAN bus from ETC or instrument cluster
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition CAN communication
Test duration approx. 15 sec.

Also see: 11 /82
The data transmission between the control modules is monitored via the CAN controller within the ME-SFI control module.

DTC P 0 7 0 0 Transmission control system malf. (gear ratio unplausible, transmission leak)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Monitor time and test frequency Continuously
Tested signal or condition Calculated gear ratios relationship out of tolerance
Acceptable gear ratios



Test duration
-0.20 to 0.20 1st and 2nd gear
-0.05 to 0.050 3rd gear
-0.03 to 0.030 4th and 5th gear
-0.2 to 0.20 Reverse gear
approx. 2 sec.
Test pre-requisites - engine rpm > 400
- output shaft rpm > 180rpm (12 miles per hr)
- no shift undertaken
Test sequence If there is no shift undertaken, then the ETC control module recognizes the gear ratio relationship for the gear in use. If the acceptable gear ratio is out of tolerance or the gear recognition is unplausible, then the modulator pressure is adjusted to its highest value after approx. 5 seconds. Should the gear ratio remain out of tolerance or the gear recognition is unplausible then after 1 second a DTC is stored.
The calculated gear ratios are calculated from the following values: N2 rpm, N3 rpm and outputshaft rpm (via rear wheel VSS). Faults are noted by the ETC control module and sent via CAN data bus to the ME-SFI control module. DTC storage and activation of the CHECK ENGINE (MIL) occur via the ME-SFI control module. Readout additional DTC 5 1 from ETC control module.

DTC P 0 7 0 0 Command valve sticks in pressure position
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Calculated gear ratio relationship out of tolerance
Acceptable gear ratios



Test duration
-0.20 to 0.20 1st and 2nd gear
-0.05 to 0.050 3rd gear
-0.03 to 0.030 4th and 5th gear
-0.2 to 0.20 Reverse gear
approx. 2 sec.
Test pre-requisites - engine rpm > 400
- output shaft rpm > 180 rpm (12 miles per hr)
- no shift undertaken
Test sequence After each shift procedure, the shift pressure is reduced gradually. If the activated shift components drag after the pressure reduction, the command valve will bind in the shift phase (pressure) side. Shift components which drag will be recognized via the gear ratio relationship tolerances
The calculated gear ratios are calculated from the following values: N2 rpm, N3 rpm and outputshaft rpm (via rear wheel VSS). Faults are noted by the ETC control module and sent via CAN data bus to the ME-SFI control module. DTC storage and activation of the CHECK ENGINE (MIL) occur via the ME-SFI control module. Readout additional DTC 5 1 , 5 2 from ETC control module.

DTC P 0 7 0 2 Transmission control system malf. (electrical)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Faults within ETC control module
- CAN data bus communication
- Unacceptable version coding
- Internal memory (RAM, ROM, EEPROM)
Faults are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTCs 5 6 6 5 in ETC control module.

DTC P 0 7 0 2 Voltage supply to solenoid valves
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage supply to solenoid valves
Lower threshold limit value
Upper threshold limit value
approx. 8.5 V (longer then approx. 0.1 sec.)
approx. 15 V (longer then approx. 0.1 sec.)
Test sequence The solenoid valves are supplied battery voltage via the ETC control module. The difference in value between battery voltage and supplied battery voltage to the solenoid valves is monitored by the ETC control module.
Faults are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 1 0 in ETC control module.

DTC P 0 7 1 5 RPM sensor function, voltage supply
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition - RPM sensor voltage supply
- N2 rpm
- N3 rpm
RPM sensor voltage supply
Lower threshold limit value
Upper threshold limit value
N2, N3 rpm signals
Test duration

< 4.8 V
> 7.2 V
Signals recognized and plausible
approx. 1 sec.
Test pre-requisites
N2 rpm sensor


N3 rpm sensor
- engine rpm > 450
- right rear wheel rpm (VSS) > 250
- left rear wheel rpm (VSS) > 250
- 3rd or 4th gear recognized
- output shaft rpm > 180 rpm (12 miles per hr)
- no shift undertaken

DTC P 0 7 1 5 RPM sensor function, voltage supply
Test sequence After a predetermined engine and wheel rpm, the rpm sensor signals must be recognized. For the N3 rpm signal, 3rd or 4th gear must be engaged.
Faults are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 1 1 1 2 1 3 in ETC control module.

DTC P 0 7 2 0 CAN fault recognition
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Wheel rpm (VSS) is checked for plausibility via ETC control module which receives the signal via the ASR and ESP control modules (G-wagen = ABS control module) via the CAN data bus
Test duration approx. 1 sec.
Faults are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 2 2 2 3 3 8 in ETC control module.

DTC P 0 7 3 0 Incorrect gear ratio
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Comparison of known gear ratio and engaged gear (calculated gear ratio) is at least 6X negative
Test pre-requisites - 2nd, 3rd, 4th or 5th gear recognized
- engine rpm > 450
- output shaft rpm > 180 rpm (12 miles per hr)
- no shift undertaken
The calculated gear ratios are calculated from the following values: N2 rpm, N3 rpm and outputshaft rpm (via rear wheel VSS). Faults are noted by the ETC control module and sent via CAN data bus to the ME-SFI control module. DTC storage and activation of the CHECK ENGINE (MIL) occur via the ME-SFI control module. Readout additional DTC 5 5 from ETC control module.

DTC P 0 7 4 0 Torque converter lock-up clutch
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Friction value of torque converter lock-up clutch
Test sequence The friction value is monitored via during torque converter lock-up by noting rpm differences. Should the values be out of tolerance numerous times, a DTC fault is noted.
Faults are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 5 3 in ETC control module.

DTC P 0 7 4 3 PWM solenoid valve (Y3/6y6)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition PWM solenoid valve engagement quality
Lower threshold limit value
Upper threshold limit value

Test duration
< 5 %
> 94%

1 sec.
Faults are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 5 in ETC control module.

DTC P 0 7 4 8 Modulating pressure regulating solenoid valve (Y3/6y1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Monitor time and test frequency Continuously
Tested signal or condition Activation of modulating pressure regulating solenoid valve
Limit values
Short to ground
Lower threshold limit value, voltage
Upper threshold limit value, voltage

Lower threshold limit value, amps
Upper threshold limit value, amps

Test duration

< 0.4 V
approx. 8.5 V
approx. 15 V

approx. 0.300 A
approx. 0.700 A

1 sec.
Faults (open circuit, short or short within solenoid while activating) are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 6 in ETC control module.

DTC P 0 7 4 8 Shift pressure regulating solenoid valve (Y3/6y2)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Activation of shift pressure regulating solenoid valve (Y3/6y2)
Limit values
Short to ground
Lower threshold limit value, voltage
Upper threshold limit value, voltage

Lower threshold limit value, amps
Upper threshold limit value, amps

Test duration

< 0.4 V
approx. 8.5 V
approx. 15 V

approx. 0.300 A
approx. 0.700 A

1 sec.
Faults (open circuit, short or short within solenoid while activating) are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 7 in ETC control module.

DTC P 0 7 5 3 1-2/4-5shift solenoid valve (Y3/6y3)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage supply to 1-2/4-5shift solenoid valve (Y3/6y3)
Limit values
Lower threshold limit value, voltage
Upper threshold limit value, voltage
Short to ground
Lower threshold limit value, amps
Upper threshold limit value, amps
Test duration

approx. 8.5 V
approx. 15 V
< 0.4 V
approx. 0.300 A
approx. 0.700 A
approx. 1 sec.
Faults (open circuit, short or short within solenoid while activating) are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 2 in ETC control module.

DTC P 0 7 5 8 2-3 shift solenoid valve (Y3/6y5)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage supply to 2-3 shift solenoid valve (Y3/6y5)
Limit values
Lower threshold limit value, voltage
Upper threshold limit value, voltage
Short to ground
Lower threshold limit value, amps
Upper threshold limit value, amps
Test duration

approx. 8.5 V
approx. 15 V
< 0.4 V
approx. 0.300 A
approx. 0.700 A
approx. 1 sec.
Faults (open circuit, short or short within solenoid while activating) are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout additional DTC 3 in ETC control module.

DTC P 0 7 6 3 3-4 shift solenoid valve (Y6/3y4)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage supply to 3-4 shift solenoid valve (Y6/3y4)
Limit values
Lower threshold limit value, voltage
Upper threshold limit value, voltage
Short to ground
Lower threshold limit value, amps
Upper threshold limit value, amps
Test duration

approx. 8.5 V
approx. 15 V
< 0.4 V
approx. 0.300 A
approx. 0.700 A
approx. 1 sec.
Faults (open circuit, short or short within solenoid while activating) are recognized via the ETC control module and are sent via the CAN data bus to the ME-SFI control module. DTC memory and activation of the CHECK ENGINE MIL are done via the ME-SFI control module. Readout ETC control module.

DTC P 1 3 8 6 Knock sensor control in N3/10
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, fault is stored immediately
Check Engine (MIL) is not activated (illuminated)
Test frequency After each deactivation of the knock sensor control
Tested signal or condition Hardware test of knock sensor control
Test pre-requisites - engine at operating temperature
- engine load is decreasing (deactivate knock sensor control)
Fault must appear at least 10 times.

DTC P 1 4 0 0 EGR valve vacuum transducer (Y31/1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage/amps to EGR valve vacuum transducer (Y31/1)
Limit threshold values
Short to ground
Short to positive (+12 V)
Open circuit
Test duration

approx. < 2.5 Volts
approx. > 4.2 Amps
no voltage at EGR valve vacuum transducer (approx. 4-8 V)
approx. 1 sec
Test pre-requisites Battery voltage must be between approx. 8 V and 17.1 V
Tested are shorts and open circuits (shorts to ground and to positive).
Shorts to ground and open circuits are recognized with a locked endstage, where else a short to positive is recognized with a conducting endstage.
With a fault the endstage is no longer activated.

DTC P 1 4 2 0
DTC P 1 4 5 3
AIR pump switchover valve (Y32)
AIR relay module, AIR pump
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Via the amp measurement of each endstage, the voltage supply of the relay air pump in relay module (K40) and AIR pump switchover valve (Y32) is evaluated.
Limit threshold values Air injection: OFF : max. of 3 volts are allowed at the output side.
Air injection: ON : a min. of 9 volts must be at the output side.

DTC P 1 5 4 2 Pedal value sensor (B37)
Fault memory At end of test duration and fault, two in sequence driving-cycles with faults, Check Engine (MIL) is not illuminated, fault is stored immediately.
Test frequency Continuously
Tested signal or condition Voltage signal 1 and 2 are compared (of potentiometers and Hall sensors).
Difference at idle
Difference at full load
Plausibility

Test duration
< 8 %
< 25 %
comparison of signals 1 and 2 to air mass value

approx. 30 sec.
Test pre-requisites The "lock time" of 60 seconds after engine start has elapsed.
A fault is stored if the voltage differnece is gretaer than 8% (up to 60% turn angle of the pedal value sensor) or gretaer than 25% (as of 60% turrn angle of the pedal value sensor).
For comparison, the voltage signals 2 with 2 are multiplied.
With the production start up of engine 112 and 113, a pedal sensor with Hall sensors has been
phased in.
If faults are noted, emergency run is activated.

DTC P 1 5 8 0 EA/CC/ISC actuator (M16/1)
Fault memory and activation of Check Engine (MIL) At end of test duration and fault, two in sequence driving-cycles with faults
Test frequency Continuously
Tested signal or condition Voltage comparison of actual values potentiometer 1 and actual values potentiometer 2
Plausibility - Voltage difference can be up to 1° of the throttle plate angle.
- Comparison of throttle plate angle and pedal value sensor position.