Fault Codes/Power Solutions International/DTC 15 74Power Solutions InternationalDTC 15 74UnclassifiedGeneralWhat This Code MeansMalfunction Indicator Light (MIL) ON; Engine ShutdownPossible Causes•Voltage feedback from the sensor is above the limit defined in calibration•No load connected to the auxiliary digital input circuit (resulting in feedback voltage of 32 VDC)Related Power Solutions International Fault CodesDTC 51DTC 52DTC 2 99DTC 102 9DTC 2 34DTC 121DTC -1644DTC 1238920DTC 1278916DTC 129Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for DTC 15 74 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE