Engine Controls - MIL ON DTC P0456 Set
24 08 05Feb. 13, 2008
2017075/1
Vehicle Information
MIL on (DTC P0456 stored in ECM)
Condition
^ Malfunction Indicator Lamp (MIL) is illuminated.
^ DTC P0456 (EVAP Emissions control system - very small leak detected) is stored in the ECM data memory.
Technical Background
Production Solution
Improved software of the Engine Control Module.
Service
Note:
Any Update Programming procedure (flash) may overwrite any tuned ECM or TCM programming. A tuned ECM or TCM is described as any ECM or TCM altered so as to perform outside the normal parameters and specifications approved by Audi of America, Inc.
Current Tuned ECM or TCM Requirements
If you encounter a vehicle with a tuned ECM or TCM, your dealership must do the following before performing any procedure that updates ECM or TCM programming:
1. Notify the owner that their ECM or TCM was found to have been tuned.
2. Notify the owner that any damage caused by the tuning of the ECM or TCM (including any adverse emissions consequences) will not be covered by Audi of America, Inc. warranties.
3. Obtain the owner's written consent (see Control Module Tuning form) for any requested repair - whether under warranty or outside warranty - that requires flashing that will automatically overwrite the tuned program.
ECM Update
1. Ensure the Control Module Tuning form (see attachment) has been filled out by the owner.
2. Prior to beginning the SVM process, insert a USB memory stick into the VAS 505X tester to capture the diagnostic log electronically.
3. For A4 (B7) only:
Always use the 6017B K-Line Adapter to ensure communication to all modules.
Note:
Do not use a 6017 or 6017A while flashing. Doing so may result in complete control module failure.
4. Update the Engine Control Unit using the SVM action code as listed in the table:
Tip:
The SVM Process must be completed in its entirety so the database receives the update confirmation response. A warranty claim may not be reimbursed if there is no confirmation response to support the claim.
For further SVM update instructions and troubleshooting, please refer to the SVM Operating Manual; ElsaWeb TSB 2011732
5. Perform leak test of EVAP Emissions Control System (Basic Settings, Channel 071).
6. If the test fails or cannot be completed successfully, perform diagnosis of the EVAP Emissions Control System following the instructions of Guided Fault Finding and the ElsaWeb Repair Manual. These activities are not covered by this TSB.
Warranty
When procedure applies to vehicles under warranty, use the table.
SAGA
Additional Information
The following technical service bulletin will be necessary to complete this procedure:
^ 2011732; Software Version Management (SVM) Operating Manual
All part and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Dept.