Ford B1231 OBD-II Trouble Code Definition: B1231 Longitudinal Acceleration Threshold Exceeded B1231 Ford OBD-II Trouble CodeDescription: OBD Trouble Code B1231 Longitudinal acceleration threshold exceeded Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. Mercedes OBD Trouble Code B1231 ECT sensor (B11/4) Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. […]