Ford P1909 OBD-II Trouble Code Definition: P1909 Data bus, ECM 1/2 – no signal from ECM 1 P1909 Ford OBD-II Trouble CodeDescription: VAG OBD Trouble Code P1909 Data bus, ECM 1/2 – no signal from ECM 1 Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. […]