Monday, April 13, 2020

2010-2020 BMW 128i Diagnostic and Repair Information

Condition For Fault Memory Entry – Miss Within First 1000 Crankshaft Rotations

29CF – P0303

Information saved in

DME

Fault code

29CF – P0303

Fault text

Combustion misfires, cylinder 3

Fault description

Cylinder 3 Misfire Detected

Condition for fault identification

Test condition:

Combustion consistency measurement. Starting at engine

speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Terminal condition: Terminal 15, engine on

Voltage condition:

Voltage in onboard electrical system > 10 V

Condition for fault memory entry

Combustion miss within first 1000 crankshaft rotations after

start

Action in service

Ignition coils, spark plugs, ignition cables, injectors, DME

Fault effect and breakdown warning