Fault Codes/Power Solutions International/15 74Power Solutions International15 74UnclassifiedGeneralWhat This Code MeansMalfunction Indicator Light (MIL) ON; Engine shutdownPossible Causes•Voltage feedback from the sensor is above the limit defined in calibrationRelated Power Solutions International Fault Codes21 2389 2015 7 2101A11102 06 52 - 5102 9102 C108111:0117 4Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 15 74 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.Your question about 15 74GET THE ANSWERFree account required — we'll bring your question with you.