Source-checked diagnostic index
RV error code library
Exact meanings, owner-safe first checks, clear stop points, and a direct link to the manufacturer material used for every guide.
65 live guides8 manufacturers4 RV systems
Generators
10 guidesCummins OnanRV generator sets; confirm the exact model manualCode 36Engine stopped without a commandCummins OnanHGLAA and compatible controllers; verify model applicabilityCode 14Output over frequencyCummins OnanHGLAA and compatible controllers; verify model applicabilityCode 15Output under frequencyCummins OnanHGLAA and compatible PMA-equipped generator setsCode 27PMA sense lostCummins OnanHGLAA and compatible controllers; verify model applicabilityCode 12Output over voltageCummins OnanHGLAA and compatible controllers; verify model applicabilityCode 13Output under voltageCummins OnanHGLAA and compatible controllers; verify model applicabilityCode 19Throttle actuator circuit faultCummins OnanHGLAA PMA-equipped generator setsCode 25Alternator over voltageCummins OnanHGLAA PMA-equipped generator setsCode 26Alternator under voltageCummins OnanHGLAA and compatible controllers; verify model applicabilityCode 29Battery over voltage
Refrigerators
22 guidesNorcold1200-series absorption refrigeratorsno coNo cooling detectedNorcold1200-series absorption refrigeratorsno FLBurner did not ignite or re-igniteNorcold1200-series absorption refrigeratorsno ACAC voltage unavailableNorcold1200-series absorption refrigeratorsAC LOAC voltage is too lowNorcold1200-series absorption refrigeratorsdc LODC control voltage is too lowNorcold1200-series absorption refrigeratorsdrDoor open for more than two minutesNorcold1200-series absorption refrigeratorsNo displayNo DC control power or refrigerator is offNorcold1200-series absorption refrigeratorsFlashing temperatureBackup Operating System is activeNorcold1200-series absorption refrigeratorsAC rEInternal refrigerator control faultNorcold1200-series absorption refrigeratorsAC HEInternal refrigerator control faultNorcold1200-series absorption refrigeratorsSrInternal refrigerator control faultDometicRM1350 and RM1350SL absorption refrigeratorsE0Display and power module are not communicatingDometicRM1350 and RM1350SL absorption refrigeratorsE1LP gas valve circuit faultDometicRM1350 and RM1350SL absorption refrigeratorsE2Temperature-sensing circuit faultDometicRM1350 and RM1350SL absorption refrigeratorsE3Cooling system malfunctionDometicRM1350 and RM1350SL absorption refrigeratorsE4DC voltage outside operating limitsFurrionArctic 8 and 10 cu. ft. 12-volt refrigerators listed in CCD-00081221 flashCompressor controller voltage faultFurrionArctic 8 and 10 cu. ft. 12-volt refrigerators listed in CCD-00081222 flashesCondenser fan faultFurrionArctic 8 and 10 cu. ft. 12-volt refrigerators listed in CCD-00081223 flashesCompressor start faultFurrionArctic 8 and 10 cu. ft. 12-volt refrigerators listed in CCD-00081224 flashesCompressor minimum-speed faultFurrionArctic 8 and 10 cu. ft. 12-volt refrigerators listed in CCD-00081225 flashesCompressor controller thermal faultFurrionArctic 8 and 10 cu. ft. 12-volt refrigerators listed in CCD-00081226 flashesCompressor controller hardware fault
Leveling & slides
12 guidesLippertGround Control 3.0 LCD leveling systemsOut of StrokeA leveling jack reached its travel limitLippertGround Control 3.0 LCD leveling systemsLow VoltageLeveling-system voltage dropped too lowLippertGround Control 3.0 LCD leveling systemsExcess AngleThe RV is too far from levelLippertGround Control 3.0 LCD leveling systemsFeature DisabledHitch recognition or leveling setup is incompleteLippertGround Control 3.0 LCD leveling systemsExternal SensorRear sensor connection faultLippertGround Control 3.0 LCD leveling systemsJack Time OutAutomatic jack operation exceeded its time limitLippertGround Control 3.0 LCD leveling systemsAuto Level FailAutomatic leveling could not finishLippertGround Control 3.0 LCD leveling systemsComm ErrorTouchpad lost communication with the controllerLippertGround Control 3.0 LCD leveling systemsBad CalibrationSensor calibration values are out of rangeLippertGround Control 3.0 LCD leveling systemsInternal SensorController sensor faultLippertGround Control 3.0 LCD leveling systemsFunction AbortedAutomatic operation was interruptedLippertGround Control 3.0 LCD leveling systemsHall Effect ShortShort circuit in a jack position-sensor circuit
Furnaces & AC
21 guidesSuburbanSF and NT-series furnaces; confirm board legend3 flashesIgnition lockoutColeman-MachDigital zone and Bluetooth thermostat systemsE1Communication faultDometicFreshJet FJZ rooftop air conditionersE0Air-conditioner communication failureDometicFreshJet FJZ rooftop air conditionersE1Room temperature sensor faultDometicFreshJet FJZ rooftop air conditionersE2Evaporator coil temperature sensor faultDometicFreshJet FJZ rooftop air conditionersE3Condenser coil temperature sensor faultDometicFreshJet FJZ rooftop air conditionersE7Outdoor temperature sensor faultDometicFreshJet FJZ rooftop air conditionersE8Discharge-pipe temperature sensor faultDometicFreshJet FJZ rooftop air conditionersE9Compressor or IPM module malfunctionDometicFreshJet FJZ rooftop air conditionersEACurrent sensor faultDometicFreshJet FJZ rooftop air conditionersEEExternal EEPROM faultDometicFreshJet FJZ rooftop air conditionersELLIN or CI bus communication failureTrumaTruma Combi furnace and water-heater systemsW 17 HHot-water mode with an empty water containerTrumaTruma Combi furnace and water-heater systemsW 18 HWarm-air outlet or circulated-air intake blockedTrumaTruma Combi furnace and water-heater systemsE 43 H12-volt supply exceeds 16.4 voltsTrumaTruma Combi furnace and water-heater systemsE 44 HBattery voltage below 10 voltsTrumaTruma Combi eco plus and comfort plus modelsW 45 H120-volt supply missing or overheat protection activeTrumaTruma Combi furnace and water-heater systemsE 112 HGas supply closed or overheat protection activeTrumaTruma Combi furnace and water-heater systemsE 202 HFuel unavailable or overheating protection activeTrumaTruma Combi furnace and water-heater systemsE 211 HGas shutoff closed or overheat protection activeTrumaTruma Combi furnace and water-heater systemsE 212 HCombustion air, gas, overheat, or electronics fault
Browse by manufacturer