Engine Controls - Hard Start/Shudder/MIL ON/DTC P1995
24 08 272017944/1
June 6, 2008
Vehicle Information
MIL on, cold start misfire
Condition
^ Cold starting problem; engine runs rough (misfires) after cold start.
^ Vehicle shudders when accelerating after cold start.
^ Engine warning light on; spark plugs wet/sooty.
^ DTC P1995 (door open signal not recognized) logged in ECM memory.
Technical Background
The cause is the software of the ECM.
Production Solution
Improved software for the ECM.
Service
Update the ECM software of the affected vehicles (two ECMs for RS4) using the SVM action codes listed in the table below.
SVM Update Instructions
1. 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:
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.
a. Notify the owner that their ECM or TCM was found to have been tuned.
b. 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.
c. Obtain the owner's written consent (see Control Module Tuning form) for any requested repair - under warranty or outside warranty - that requires flashing that will automatically overwrite the tuned program.
2. Check the software part number and software level in the ECM.
3. Prior to beginning the SVM process, insert a USB memory stick into the VAS 505X tester to capture the diagnostic log electronically. In case TAC support is required, attach the diagnostic log to the ticket. The TAC consultant will need this log to assist you.
4. Update the ECM using the SVM action code as listed in the table below if necessary.
For A4 (B7), 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.
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.
If the update programming aborts for any reason before full completion, ensure that VAS Base Software Patch CD (Audi Technical Literature item number W42BaseSoftwarePatch) is installed in the VAS 5051/5052, and restart the SVM flash function test from the test plan. If contact is necessary, attach the diagnostic log to the ticket.
Tip:
The electric cooling fan may be activated during the ECM flashing procedure.
After updating the programming of the ECM, it is not necessary to set the Readiness Code.
For further SVM update instructions and troubleshooting, please refer to the SVM Operating Manual; ElsaWeb TSB 2011732.
Warranty
SAGA
Required Parts and Tools
Approved battery charger.
Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.