Oxygen Sensor Heating After TWC, Bank 2 - Below Limi

P0057

Oxygen Sensor Heating After TWC, Bank 2 - Below Limit

Diagnosis conditions
- Engine running

Possible fault cause
- Short circuit to ground

Affected terminals
II/1

Diagnosis/Troubleshooting

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

Work Instruction 1 - 2:

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