Possible causes
– Intake air leak
– Faulty O2 Sensor
– Faulty Mass Air Flow (MAF) Sensor
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
– Faulty O2 Sensor
– Faulty Mass Air Flow (MAF) Sensor
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
Tech description
2002 Volkswagen Passat
User Submitted Video
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)