July 2019 Service and Repair ManualEnginesPart No. 1286829GT S-40 XC • S-45 XC • S-40 TraX • S-45 TraX 575-4Engine Fault Codes -Ford MSG-425 ModelsHow to Retrieve Engine FaultCodesThe ECM constantly monitors the engine by theuse of sensors on the engine. The ECM also usessignals from the sensors to initiate sequential fuelinjection and make constant and instantaneouschanges to ignition timing, fuel delivery and throttleposition to maintain the engine's running conditionat its highest efficiency while at the same timekeeping exhaust emissions to a minimum. When asensor fails or returns signals that are outside ofset parameters, the ECM will store a fault code inmemory that relates to the appropriate sensor andwill turn on the Check Engine Light.Refer to Fault Code Section, How to Retrieve FordEngine Fault Codes. Use the Fault Code Chart toaid in identifying the fault.5-5Engine Fault Codes -Deutz D 2.9 L4 and Perkins404F-22 ModelsHow to Retrieve Engine FaultCodesThe ECM constantly monitors the engine by theuse of sensors on the engine. The ECM also usessignals from the sensors to initiate sequential fuelinjection and make constant and instantaneouschanges to ignition timing, fuel delivery and throttleposition to maintain the engine's running conditionat its highest efficiency while at the same timekeeping exhaust emissions to a minimum. When asensor fails or returns signals that are outside ofset parameters, the ECM will store a fault code inmemory that relates to the appropriate sensor. Oneor more fault LED's will illuminate on the displaylocated at the ground control box. The active faultcode will also be displayed on the LCD screen.If a fault occurs that does not result in an engineshutdown, the engine rpm will go into limp homemode resulting in the loss of high rpm.Refer to Fault Code Section, How to RetrieveActive Engine Fault Codes for your specific enginemodel. Use the Fault Code Chart to aid inidentifying the fault.