Oxygen Sensor Heating Ahead of TWC, Bank 2 - Signal Implausible

P0155

Oxygen Sensor Heating Ahead of TWC, Bank 2 - Signal Implausible

Diagnosis conditions
- Mass air flow above 16 kg/h
- No other oxygen sensor faults
- Battery voltage between 9.5 V and 16 V

Possible fault cause
- Open circuit
- Oxygen sensor heating faulty
- DME control module

Affected terminals
II/13

Diagnosis/Troubleshooting

NOTE: Do not use contact spray on the connectors to oxygen sensor.

Work Instruction 1 - 2:

Work Instruction 3 - 5:

NOTE: Do not exchange oxygen sensors ahead of catalytic converter and after catalytic converter

Oxygen sensors ahead of and after catalytic converter







1 - Oxygen sensor ahead of catalytic converter
2 - Oxygen sensor after catalytic converter