Possible causes
– Faulty heated oxygen sensor
– Heated oxygen sensor harness open or shorted
– Heated oxygen sensor circuit poor connection
– Heated oxygen sensor harness open or shorted
– Heated oxygen sensor circuit poor connection
When is the obd code mean?
Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)