2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts
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Condition For Fault Memory Entry – Miss Within 4 Diagnosis Windows
29CC – P0300
128
Information saved in
DME
Fault code
29CC – P0300
Fault text
Combustion misfires, several cylinders
Fault description
Random/Multiple Cylinder Misfire Detected
Condition for fault identification
Test condition:
Combustion consistency measurement. Starting at engine
speed n > 450 and n 740 hPa
Combustion miss on at least two cylinders
Terminal condition: Terminal 15, engine on
Voltage condition:
Voltage in onboard electrical system > 10 V
Condition for fault memory entry
Combustion miss detected within four diagnosis windows
consisting of 1000 crankshaft rotations
Action in service
Ignition coils, spark plugs, ignition cables, injectors, DME
Fault effect and breakdown warning
