Ford P1798 OBD-II Trouble Code Definition: P1798 Coolant temperature circuit malfunction P1798 Ford OBD-II Trouble CodeDescription: PSA OBD Trouble Code P1798 Coolant temperature circuit malfunction Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. VAG OBD Trouble Code P1798 Output Speed Sensor 2 Circ. Range/Performance Sorry no other information,Please help us to improve,Any information […]