Fault Codes/Power Solutions International/1028Power Solutions International1028UnclassifiedGeneralWhat This Code MeansMIL ON during active fault; Engine shutdownPossible Causes•MFG fluid downstream pressure sensor output voltage is higher than the internally-defined high voltage limitSuggested Actions1Replace MFG with known good unit and retestRelated Power Solutions International Fault Codes1173135110271352 - 136010251023160210221603891 416121111Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 1028 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE