Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1– Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 harness is open or shorted– Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 circuit poor electrical conection– Air leak in exhaust near O2 sensor When is the obd code mean? If the Powertrain Control Module…