Oxygen Sensor After TWC, Bank 1 - Below Limit

P0137

Oxygen Sensor After TWC, Bank 1 - Below Limit

Diagnosis conditions
- Exhaust temperature between 250 degree C and 750 degree C
- Battery positive voltage greater than 9.5 V
- 200 seconds after start
- No secondary air
- No diagnosis of secondary air system
- No fuel tank ventilation
- No diagnosis of fuel tank ventilation system
- No faults in memory

Possible fault cause
- Short circuit to ground in signal size
- Intercore short circuit

Affected terminals
II/17

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







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