Fault Codes/Power Solutions International/1023Power Solutions International1023UnclassifiedGeneralWhat This Code MeansDTC 1023 displays under Key ON, Engine Running, and System Mode = 'Running'; DTC displaysPossible Causes•Wire connected to terminal at the MFG is partially or completely shorted to power (Vbat, Vsw, Vrelay, etc.)•Faulty battery or battery connection•Faulty MFG•Intermittent problemSuggested Actions1Perform the On-Board (OBD) System Check2Go to OBD System Check Section3Perform test: Key ON, Engine Running, System Mode = 'Running' to check if DTC displaysRelated Power Solutions International Fault Codes1025102710221028891 4117368513516521352 - 13605631024Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 1023 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE