2C40 - P0151

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

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2C40 - P0151 (DME)

2C40 - P0151

Information saved in

DME

Fault code

2C40 - P0151

Fault text

DME, internal fault: oxygen sensor 2, evaluation module

Fault description

O2 Sensor Circuit Low Voltage (Bank 2 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