A4 Sedan V6-3.2L (BKH) (2007)
Affected Vehicles
Condition
^ TSB 2021232 or Campaign 28F2/J1 has been performed.
^ Rough idle.
^ The MIL is flashing or constantly illuminated.
^ One or more of the following DTCs are stored:
^
DTC P0300 (Random/Multiple Cylinder Misfire Detected).
^
DTC P0301 - P0312 (Cyl.1 Misfire Detected - Cyl.12 Misfire Detected).
^ Engine may have reduced performance without significant loss of power or stalling.
Technical Background
Generation II coils listed in TSB 2021232 and Campaign 28F2/J1 general are not the root cause of engine misfire conditions. Replaced ignition coils
have commonly been related to conditions such as:
^ Incorrect installation of ignition coils.
^ Loose or damaged electrical connections.
^ Circuit grounds.
^ Poor fuel quality.