P0054
Powertrain Codes
P0054 - ISUZU - HO2S Heater Resistance Sensor 2
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Heated oxygen sensor harness open or shorted - Heated oxygen sensor circuit poor connection - Faulty heated oxygen sensor
When Detected
Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit