Ford P1641 OBD-II Trouble Code Definition: P1641 FC Relay 1 Control Circuit P1641 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P1641 FC Relay 1 Control Circuit Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. OBD Trouble Code P1641 VI Motor Open/Short Coil2 Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. […]