Fault Codes/Rehlko/COOLANT TEMP LOW WARNINGRehlkoCOOLANT TEMP LOW WARNINGUnclassifiedCoolingWhat This Code MeansLow coolant temperatureRelated Rehlko Fault CodesCOOLNT TEMP HIGH WARNING/SHUTDWNCRANK LOST WARNINGCOOLANT LVL LOW SHUTDWNCYLINDER DROPOUTBATTERY VOLTAGE LOWCYLINDER DROPOUT CODESBATTERY VOLTAGE HIGHECM WARNINGSBATT CHG FLTFAULTSAUX INPUTFFBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for COOLANT TEMP LOW WARNING on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about COOLANT TEMP LOW WARNINGGET THE ANSWERFree account required — we'll bring your question with you.