2019 BMW 128i Convertible (E88) L6-3.0L (N51) A L L Diagnostic Trouble Codes ( DTC ): Manufacturer Code Charts Page 169
Service instruction
none
2C75
2C75 - P0137
Information saved in
DME
Fault code
2C75 - P0137
Fault text
Oxygen sensor behind catalytic converter, signal
Fault description
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
Condition for fault identification
Test condition:
O2 sensor signal check
No fault memories;
Mass airflow exceeds 10 kg/h
Terminal condition: Terminal 15, engine on
Voltage condition:
none
Condition for fault memory entry
Bank 1 downstream (post-cat) O2 sensor voltage less than
0.02 V; internal resistance in circuit for downstream oxygen
sensor less than 10 ohms
Action in service
1. Check wiring
2. Check plugs
3. Resistance measurement
4. Measure voltage
5. Replace Bank 1 downstream (post-cat) O2 sensor
Fault effect and breakdown warning
Driver information
Warning light:
MIL ON
Service instruction
none
2C76
2C76 - P0157
Information saved in
DME
Fault code
2C76 - P0157
Fault text
Oxygen sensor behind catalytic converter 2, signal
Fault description
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
Condition for fault identification
Test condition:
O2 sensor signal check
