2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): 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
Check wiring
Check plugs
Resistance measurement
Measure voltage
Replace Bank 1 downstream (post-cat) O2 sensor
Fault effect and breakdown warning
Driver information Warning light: MIL ON
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