Fault Codes/Power Solutions International/1027Power Solutions International1027UnclassifiedGeneralWhat This Code MeansMIL ON during active fault; Engine shutdownPossible Causes•MFG fluid upstream pressure sensor output voltage is lower than the internally-defined low voltage limitSuggested Actions1Replace MFG with known good unit and retestRelated Power Solutions International Fault Codes102811731025135110231352 - 13601022891 416026851603Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 1027 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE