Oxygen Sensor Heating After TWC, Bank 1 - Above Limit

P0038

Oxygen Sensor Heating After TWC, Bank 1 - Above Limit

Diagnosis conditions
- Engine running

Possible fault cause
- Resistance of the oxygen sensor heating too low
- Short circuit to B+

Affected terminals
II/7

Diagnosis/Troubleshooting

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

Work Instruction 1 - 2:

NOTE:
- Faults are recorded in this test, Refer to Erase the fault memory.
- 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