Engine - MIL ON/Misfire DTC's Stored in Memory
24 08 592011719/6
November 19, 2008. Supersedes Technical Service Bulletin Group 24 number 08-01 dated January 7, 2008 for reasons listed below.
Vehicle Information
01 MIL on - misfire DTC stored after cold start
Condition
Sporadically, the engine may run slightly rough for a few seconds after cold start. The MIL may illuminate with a DTC for misfire on one cylinder only (P0301, P0302, P0303, P0304, P0305 or P0306) stored in the ECM data memory. The rough running condition disappears a few seconds after cold start and does not exist with a warm engine.
Technical Background
Not applicable.
Production Solution
Not applicable.
Service
1. For 3.2FSI only:
Ensure that TPL 2010890 - Cold engine runs rough or stumbles; warm engine may stall when engaging gear and vehicle is stationary has been performed.
2. Follow normal Guided Fault Finding Diagnosis, for example:
- Swap spark plugs and ignition coils between affected cylinder(s) and good cylinder(s).
- Check compression and leak-down of affected cylinder(s).
- Verify fuel quality. (Also refer to TPL 2014753 - Gasoline quality.)
- Swap fuel injectors between affected cylinder(s) and good cylinder(s).
NOTE:
When swapping fuel injectors, always replace all fuel injector seals.
3. If diagnosis results are inconclusive and the condition persists, replace all rocker arms and all hydraulic equalizing elements (lifters) of the affected exhaust side.
(4 cylinder engine: 8 rocker arms and 8 lifters. 6 cylinder engine: 6 rocker arms and 6 lifters of the affected cylinder bank.)
Warranty
When procedure applies to vehicles under warranty, use the following:
Required Parts and Tools
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.