Monday, April 13, 2020

2010-2020 BMW 128i Diagnostic and Repair Information

Condition For Fault Memory Entry – Miss Within 4 Diagnosis Windows

29CC – P0300

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 < 7000. Ambient pressure > 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

2010-2020 BMW 128i Convertible (E88) L6-3.0L (N51) WWW.168MOTIVE.COM Page 312

Fault effect and breakdown warning