Fault Codes/Power Solutions International/DTC 1028Power Solutions InternationalDTC 1028UnclassifiedGeneralWhat 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 limit•Fault is diagnosed internally within the MFG then relayed to the ECM via CAN communicationSuggested Actions1Replace MFG with known good unit and retestRelated Power Solutions International Fault CodesDTC 1173DTC 1552DTC 1026DTC 1612DTC 1025DTC 1613DTC 1022DTC 1614DTC 685DTC 1615DTC 606DTC 1616Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for DTC 1028 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE