Friday, July 12, 2019

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

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