Ford P1085 OBD-II Trouble Code Definition: P1085 Exhaust Bank 4- Mixture Adaption Range 1 Lower Lean Limit Not Reached P1085 Ford OBD-II Trouble CodeDescription: Causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) […]