Fault Codes/Power Solutions International/DTC 52Power Solutions InternationalDTC 52UnclassifiedGeneralWhat This Code MeansMalfunction Indicator Light (MIL) ON during active faultPossible Causes•Voltage feedback from the UEGO sensor heater is always equal to the battery or supply voltage (short to Vbattery)•UEGO heater control signal does not achieve zero volts when the heater is switched on•Internal fault within the ECMRelated Power Solutions International Fault CodesDTC 102 9DTC 121DTC 51DTC 123DTC 15 74DTC 127DTC 2 99DTC 129DTC 2 34DTC 148DTC -1644DTC 234Browse all Power Solutions International fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for DTC 52 on your specific Power Solutions International unit — cited to the OEM manual, not a forum guess.TRY IT FREE