21 documented codes across 64 real diagnostics.
Oxygen sensor circuits, heaters and response. Includes both the pre-cat sensor that drives fuelling and the post-cat sensor that judges the catalyst.
Ranked by how often we actually see them
- P0135, O2 sensor heater circuit, bank 1 sensor 1
- P0141, O2 sensor heater circuit, bank 1 sensor 2
- P2196, O2 sensor signal biased or stuck rich, bank 1 sensor 1
- P0134, O2 sensor circuit no activity detected, bank 1 sensor 1
- P0136, O2 sensor circuit, bank 1 sensor 2
- P0030, O2 sensor heater control circuit, bank 1 sensor 1
- P0130, O2 sensor circuit, bank 1 sensor 1
- P0131, O2 sensor circuit low voltage, bank 1 sensor 1
- P0140, O2 sensor circuit no activity detected, bank 1 sensor 2
- P0031, O2 sensor heater control circuit low, bank 1 sensor 1
- P0132, O2 sensor circuit high voltage, bank 1 sensor 1
- P0133, O2 sensor circuit slow response, bank 1 sensor 1
- P0139, O2 sensor circuit slow response, bank 1 sensor 2
- P2A00, O2 sensor circuit range/performance, bank 1 sensor 1
- P0062, not individually documented
- P0051, O2 sensor heater control circuit low, bank 2 sensor 1
- P0154, O2 sensor circuit no activity detected, bank 2 sensor 1
- P0137, O2 sensor circuit low voltage, bank 1 sensor 2
- P0138, O2 sensor circuit high voltage, bank 1 sensor 2
- P0151, O2 sensor circuit low voltage, bank 2 sensor 1
- P0157, O2 sensor circuit low voltage, bank 2 sensor 2