14 - O2 Sensor Heating After TWC, Bank 1 - Signal Implausible

P1117

14 Oxygen Sensor Heating After TWC, Bank 1 - Signal Implausible

Diagnosis conditions
- Exhaust temperature between 300 °C and 600 °C
- Battery voltage between 9.5 V and 16 V

Possible fault cause
- Corrosion in connector
- Oxygen sensor

Affected terminals
- II/7

Diagnosis/Troubleshooting

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

Work Instruction 1 - 3:

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




Oxygen sensors ahead of and after catalytic converter