P0054
HO2S Heater Resistance Bank 1 Sensor 2
The heater resistance of the bank 1, sensor 2 oxygen sensor is outside its specified range. Sensor heater aging or short between heater and signal.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Heater element agedCommon
Parts involved
- Oxygen Sensor B1s2
P0054 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.