Fault Codes/Discovery Energy, LLC (Rehlko)/D14Discovery Energy, LLC (Rehlko)D14UnclassifiedCoolingWhat This Code MeansLow coolant levelRelated Discovery Energy, LLC (Rehlko) Fault CodesHI COOL TEMP SHUTDOWNHI COOL TEMP WARNINGD03HI OIL TEMP SHUTDOWNHI OIL TEMP WARNINGHICOOLTEMP SHUTDOWNINTAKE AIR TEMP SDWNINTAKE AIR TEMP WARNLOAD SHED OVER TEMPERATURELOADSHED OVER TEMPERATUREP0125P0126Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for D14 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about D14GET THE ANSWERFree account required — we'll bring your question with you.