2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts
none
P2197
2C28 – P2197
Information saved in
DME
Fault code
2C28 – P2197
Fault text
Oxygen sensor before catalytic converter 2, system check
Fault description
O2 Sensor Signal Biased/Stuck Lean (Bank 2 Sensor 1)
Condition for fault identification
Test condition:
After trim control fault; sensor indicates more than 18% too
lean
Terminal condition: none
Voltage condition:
269
none
Condition for fault memory entry
Terminal 15, engine on
Action in service
Check sensor wiring for short circuit; otherwise replace the
suspect sensor
Fault effect and breakdown warning
