Ford P1823 OBD-II Trouble Code Definition: P1823 Internal Mode Switch Circuit P Low P1823 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P1823 Internal Mode Switch Circuit P Low Sorry no other information,Please help us to improve,Any information is appreciated.Thanks. PSA OBD Trouble Code P1823 Transmission transfer case clockwise shift relay coil Short circuit to ground Sorry […]