2C76 - P0157

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): 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 No fault memories;

Mass airflow exceeds 10 kg/h

Terminal condition: Terminal 15, engine on Voltage condition:

none

Condition for fault memory entry

Bank 2 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 2 downstream (post-cat) O2 sensor

Fault effect and breakdown warning

Driver information Warning light: MIL ON