Fault Codes/Power Solutions International/3031Power Solutions International3031UnclassifiedGeneralWhat This Code MeansMIL ON during active fault; Closed Loop DisabledPossible Causes•Bad heater element in the UEGO sensor•Break in the wire harness on the heater supply or control circuits•Fault within the ECMRelated Power Solutions International Fault Codes30323468:13014698730128901222989022135890416748914Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 3031 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.Your question about 3031GET THE ANSWERFree account required — we'll bring your question with you.