- Replacing the O2 sensor for bank 2 sensor 1 if all tests indicate a failed sensor.
- Repairing or replacing the wiring or connection to the O2 sensor for bank 2 sensor 1.
- Repairing exhaust leaks before the sensor that introduce excessive oxygen into the exhaust.
What can cause a P0151?
- Faulty oxygen sensor.
- Short to voltage on oxygen signal circuit.
- Open or high resistance on oxygen signal circuit.
- Exhaust leaks in the sensor which causes the oxygen sensor to read excessive O2 level, and the PCM to run rich.