Code P0055 Possible Causes
Faulty Heated Oxygen Sensor Bank 1 Sensor 3
Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection
Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted
Faulty Engine Control Module ECM
Faulty Heated Oxygen Sensor H2OS Bank 2 Sensor 2