Ford C1234 OBD-II Trouble Code Definition: C1234 Left Rear Wheel Speed Circuit Open or Shorted C1234 Ford OBD-II Trouble CodeDescription: OBD Trouble Code C1234 Wheel speed RF input signal missing Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. OBD Trouble Code C1234 Left Rear Wheel Speed Circuit Open or Shorted Sorry no other […]