Possible causes
– Faulty O2 Sensor Bank 2 Sensor 1
– O2 Sensor Bank 2 Sensor 1 harness is open or shorted
– O2 Sensor Bank 2 Sensor 1 circuit poor electrical connection
– O2 Sensor Bank 2 Sensor 1 harness is open or shorted
– O2 Sensor Bank 2 Sensor 1 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)