Fault Codes/Cummins/HIGH BATTERY 1 VOLTAGECumminsHIGH BATTERY 1 VOLTAGEUnclassifiedElectricalWhat This Code MeansWarning lamp illuminated; High Battery 1 Voltage messagePossible Causes•High battery charge float levelSuggested Actions1Clean the battery terminals and tighten all connections2Check the battery charge float level3Lower the battery charge float levelRelated Cummins Fault CodesHIGH BATTERY VOLTAGE WARNINGLOW BATTERY VOLTAGE WARNINGFAIL TO SHUTDOWN FAULTSYNCHRONIZER OUTPUT LIMIT WARNINGF1SYNCHRONIZER PHASE ROTATION WARNINGEMERGENCY STOPCODE 57CODE 48CODE 45CODE 43CODE 42Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for HIGH BATTERY 1 VOLTAGE on your specific Cummins unit — cited to the OEM manual, not a forum guess.TRY IT FREE