2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts
none
P2297
2C2D – P2297
Information saved in
DME
Fault code
2C2D – P2297
Fault text
Oxygen sensor before catalytic converter, overrun check
Fault description
276
O2 Sensor Out of Range During Deceleration (Bank 1
Sensor 1)
Condition for fault identification
Test condition:
Implausible O2 sensor signal in overrun cutoff phase,
no fault memories
Terminal condition: Terminal 15, engine on
Voltage condition:
none
Condition for fault memory entry
Bank 1 O2 sensor before catalytic converter voltage less
than 3.1 V or greater than 2.1 V with overrun injection
deactivation active
Action in service
1. Visual inspection of wiring and plugs (water or corrosion
in plug?)
1a. Repeatedly remove the plug and then FIRMLY insert it
again
2. Electrical check of wiring
3. Check catalytic converter (FSD lean fault may be entered
for the other bank)
4. Piston rings, injector valves, positive crankcase
ventilation OK? FSD fault? Then continue there!
5. Replace wires or plugs on O2 sensors as indicated
6. Replace O2 sensor
Fault effect and breakdown warning
