Fault Codes/Power Solutions International/DTC 188Power Solutions InternationalDTC 188UnclassifiedCoolingWhat This Code MeansFuel temperature greater than 250°F; Fuel temperature greater than diagnostic thresholdPossible Causes•Faulty MFG•Faulty EPR•Actual high fuel temperatureSuggested Actions1Determine cause of high fuel temperature and resolve2Replace MFG or EPR3Perform On-Board (OBD) System Check4Measure fuel temperature with an infrared gun or temperature probeRelated Power Solutions International Fault CodesDTC 217DTC 116DTC 18 7520240:315721517136013521024217188157 4Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for DTC 188 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE