Fault Codes/Rehlko/BATTERY HIGHRehlkoBATTERY HIGHUnclassifiedElectricalWhat This Code MeansEngine starting battery voltage rises above 16 VDC for more than 10 secondsPossible Causes•Incorrect battery rating•Battery charger malfunctionSuggested Actions1Check the battery rating and condition2Check the battery charger operationRelated Rehlko Fault CodesBATTERY VOLTAGE HIGH WBATTERY VOLTAGE LOW WBATTERY CRLOBUSDEADLIVEAGS-10CFGMODELNUMADC-RESCFGSYSVOLTAC SENS LOSSCHECK AC SENS LOSSA-336415-ACONCHECKFAILBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for BATTERY HIGH on your specific Rehlko unit — cited to the OEM manual, not a forum guess.TRY IT FREE