Diagnostic Support For Mil On, EVAP System DTC Stored In ECM Fault Memory (GROUP 01, NO. 10-16)
Publication date: 2010-12-17Reference number: GROUP 01, NO. 10-16
Supersedes refnos: 2025150
DIAGNOSTIC SUPPORT FOR MIL ON, EVAP SYSTEM DTC STORED IN ECM FAULT MEMORY
TECHNICAL SERVICE BULLETIN
| VOLKSWAGEN: | Jetta 2011 |
| GROUP: | 01 - On-Board Diagnostic |
| Model(s) | Year | Eng. Code | Trans. Code | VIN Range From | VIN Range To |
|---|---|---|---|---|---|
| Jetta | 2011 | 2.0L CBPA 2.5L CBTA, CBUA | All | All | All |
CONDITION
01 10 16 December 17, 2010 2025150
Diagnostic Support for MIL ON, EVAP System DTC Stored in ECM Fault Memory
One or more of the following fault codes may be stored in the ECM Fault Memory:
| DTC | Description |
|---|---|
| P0441 | EVAP emission control system incorrect purge flow |
| P0442 | EVAP emission control system small leak recognized |
| P0444 | EVAP pure control valve circuit open |
| P0455 | EVAP emission control system gross leak recognized |
| P0456 | EVAP emission control system small leak recognized |
| P0459 | Tank ventilation valve short to B+ |
TECHNICAL BACKGROUND
Assistance to properly diagnose an EVAP system leak concern.
PRODUCTION SOLUTION
Not applicable.
SERVICE
Update-Programming Procedure:
Tip: Before beginning diagnostic procedures ensure the vehicle's engine has been running for at least 10 minutes, and then turned off with the ignition switch on. The altitude must be less than 2,500 meters, ambient temperature between 4 and 35°C, fuel level in the vehicle between 15 and 85%, and battery voltage between 11 and 16.5V.
- With the scan tool connected, run 'Basic Settings' for MVB71 in Self-Diagnosis. Click 'Activate' to begin the test.
Tip: This step may take up to 8 minutes to complete.
- After testing steps 0-4 complete, reference the chart below for results:
| Testing Step | Description |
|---|---|
| 0 | Function Active |
| 1 | Reference leak measuring phase |
| 2 | 0.04" leak detection phase |
| 3 | 0.02" leak detection phase |
| 4 | Second reference leak measuring phase |
| Error Code | Description |
| 10 | Function cannot be started |
| 11 | Battery voltage outside range |
| 12 | Fluctuation of current too large |
| 13 | Electrical fault present |
| 14 | Maximum diagnosis time reached/exceeded |
| 15 | No 0.04" leak enable clearance |
| 20 | Function has been aborted |
| 23 | Battery fluctuation too large |
| 24 | Ignition on |
| 255 | Power supply failure |
| Result Code | Description |
| 30 | Function finished, no leaks detected |
| 31 | Function finished, 0.02" leak detected |
| 32 | Function finished, 0.04" leak detected |
| 33 | Function finished, module fault detected |
| 34 | Function finished, leak larger than 0.04" detected |
- If the result shows a leak was detected, in ElsaWeb reference section '20 Fuel Supply', Diagnosis and Testing, and perform procedure 'Large Leak Test in Fuel System" to identify leaks in the EVAP system.
- If the test completes and no faults or error codes are detected, clear all codes and release the vehicle to the customer.
WARRANTY
Information only.
REQUIRED PARTS AND TOOLS
No Special Parts required.
No Special Tools required.
ADDITIONAL INFORMATION
All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information.