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

P0150

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

Diagnosis conditions
- Vehicle at operating temperature, after this 3 minutes idle speed, then approx. 30 seconds increased idle speed.

Possible fault cause
- Short circuit to ground
- Short circuit to B+
- Open circuit
- Oxygen sensor

Affected terminals
- II/6, II/10, II/13, II/16 and II/24

Diagnosis/Troubleshooting

NOTE:
- All electrical faults are recorded under the fault code P0150.
- Do not use contact spray on the connectors to oxygen sensors.

Work Instruction 1 - 12:

NOTE:
- Faults are recorded in these tests. Erase the fault memory.
- Break in wiring in the oxygen sensor cannot be measured. To detect such faults, change between oxygen sensors bank 1 and 2. If the fault follows, then the oxygen sensor is faulty.
- Do not exchange oxygen sensors ahead of catalytic converter and after catalytic converter.




Oxygen sensors ahead of and after catalytic converter