Possible causes
– Faulty Front Oxygen Bank 1 Sensor
– Front Oxygen Sensor Bank 1 harness is open or shorted
– Front Oxygen Sensor Bank 1 circuit poor electrical connection
– Front Oxygen Sensor Bank 1 harness is open or shorted
– Front Oxygen Sensor Bank 1 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)