A8L Quattro Sedan V8-4.2L (BVJ) (2007)
Ignition Coil: All Technical Service Bulletins
Ignition System - MIL ON/Multiple Misfire DTC's are Set
28 08 12
2013623/5
November 18, 2008.
Supersedes Technical Service Bulletin Group 28 number 08-06 dated March 28, 2008 for reasons listed below.
Affected Vehicles
01 MIL on (DTCs for misfire, P0300 - P0312)
Condition
-
The MIL is flashing or constantly illuminated.
-
DTCs for misfire in one or more cylinders (P0300 to P0312, depending on the engine) are stored in the ECM data memory.
Technical Background
The misfire condition can be caused by the ingress of moisture in the ignition coils.
Production Solution
A new generation of ignition coils (supplier Powertrain Pulse ERA) are being installed in production.