Ford P1203 OBD-II Trouble Code Definition: P1203 Injector Circuit Open / Shorted – Cylinder #3 P1203 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P1203 Injector Circuit Open / Shorted – Cylinder #3 Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. OBD Trouble Code P1203 (Alternative Fuel) Gas Mass Sensor Circuit High Frequency Sorry […]