Possible causes
– Faulty O2 Sensor
– High fuel pressure
– Faulty Mass Air Flow (MAF) Sensor
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
– High fuel pressure
– Faulty Mass Air Flow (MAF) Sensor
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)