Thursday, August 8, 2019

2C3F - P0131

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction



none









2C3F - P0131 (DME)



2C3F - P0131







Information saved in



DME









Fault code



2C3F - P0131









Fault text



DME, internal fault: oxygen sensor, evaluation module









Fault description



O2 Sensor Circuit Low Voltage (Bank 1 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



Visual inspection of wires, DME plug and O2 sensor for damage



Check wires



Check plug-in connections DME <=> Wiring harness



<=> Upstream (pre-cat) O2 sensor for Bank 2





Check wiring harness for shorts to positive or ground and shorts/shunt to other bank (melted?) => Replace wiring harness



Replace O2 sensor



Replace DME







Fault effect and breakdown warning







Driver information Warning light: MIL ON

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