Commercial diesel fault codes

    5,930 truck engine and chassis fault codes. Search any code, SPN/FMI or flash code from the search bar, or browse by manufacturer.

    Cummins

    407 fault codes

    Detroit Diesel

    844 fault codes

    Hino

    141 fault codes

    PACCAR (Kenworth & Peterbilt)

    1470 fault codes

    Volvo (and Mack)

    1105 fault codes

    Isuzu

    7 fault codes

    International (Navistar)

    1956 fault codes

    Car or light truck? See OBD-II codes. Truck down now? Find a diesel shop.