Possible causes
– Faulty Rear Secondary HO2S Bank 1 Sensor 2
– Rear Secondary HO2S Bank 1 Sensor 2 harness is open or shorted
– Rear Secondary HO2S Bank 1 Sensor 2 circuit poor electrical connection
– Rear Secondary HO2S Bank 1 Sensor 2 harness is open or shorted
– Rear Secondary HO2S Bank 1 Sensor 2 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)