2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts
none
P0151
2C40 – P0151
Information saved in
DME
Fault code
2C40 – P0151
Fault text
DME, internal fault: oxygen sensor 2, evaluation module
Fault description
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
Condition for fault identification
Test condition:
Monitoring of O2 sensor chip
No fault memories
Terminal condition: Terminal 15, engine on
Voltage condition:
none
Condition for fault memory entry
Short to ground in self-diagnosis processor chip
Action in service
1. Visual inspection of wires, DME plug and O2 sensor for
damage
2. Check wires
3. Check plug-in connections DME Wiring harness
Upstream (pre-cat) O2 sensor for Bank 2
4. Check wiring harness for shorts to positive or ground and
shorts/shunt to other bank (melted?) => Replace wiring
harness
5. Replace O2 sensor
6. Replace DME
Fault effect and breakdown warning
