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LG refrigerator error codes: what each one means

Use this list to match the letters or numbers on an LG refrigerator display with the part or condition the control detected. Start with the safe first check shown, and stop if a code points to sealed system, compressor, wiring, or control diagnosis. Some messages are status displays rather than faults.

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Reading the code

LG refrigerator codes appear on the exterior or interior temperature control panel, while some analog models show LED patterns instead of letters. To try a reset, unplug the refrigerator for 5 minutes and restart it; if the same fault comes back, the control is still seeing a problem. Confirmed status messages include OFF or OF F for demo mode, Sb for Sabbath mode, 88 for a normal diagnostic display, and Lo or HI for room temperature warnings. Demo mode can be turned off on many models by opening a refrigerator door and holding Refrigerator and Ice Plus together for five seconds, while Sabbath mode uses the Freezer and Wi Fi buttons for three seconds on models with that combo.

Have the model number ready

The company will ask for it first. It's on a sticker or metal plate, usually in one of these spots:

Where the model tag usually is on a refrigerator12
  1. Inside the fresh-food section, on a side wall near the top
  2. Some models: on the ceiling or behind the crisper drawer

LG refrigerator error codes

Covers French door, side by side, bottom mount, and top mount model families; code prefixes such as E, r, and Er vary by model.

40 codes

CodeWhat it meansCheck firstUsually
IF / F1 / 1FThe ice maker fan is not operating correctly, often because frost or ice is around the fan.Unplug first, move food to a safe cooler, leave the doors open for at least 8 hours, dry visible water, then restart.Often a home check
FF / E FF / FThe frozen food compartment fan is not turning correctly, sometimes because frost is blocking it.Unplug first, move food to a safe cooler, leave both doors open for at least 24 hours, then dry visible water and restart.Often a home check
rF / E rFThe fresh food compartment fan motor is not operating normally, and frost buildup can be a cause.Unplug first, move food to a safe cooler, leave both doors open for at least 24 hours, then dry visible water and restart.Often a home check
dH / FdH / dHFThe control did not see the expected temperature rise during the defrost cycle within the allowed time.Unplug for 2 minutes to reset; if dH returns, needs a technician because the defrost circuit may not be heating correctly.Usually a technician
CF / C / E CFThe condenser fan feedback signal is missing or out of range while the fan should be running.Needs a technician because the condenser fan circuit is in the machine area and may involve the fan, wiring, or main board.Usually a technician
CO / C0 / Er COThe control board and display are not communicating correctly. Full guide →Needs a technician because communication between the main control and display uses internal wiring and control boards.Usually a technician
22The control detected a compressor relay problem.Needs a technician because compressor relay checks involve the compressor circuit.Usually a technician
67The control detected a door gap or an object keeping a door from closing correctly.Unplug first, remove items blocking the door, and make sure both doors seal fully against the cabinet.Often a home check
OFF / OF F / O FFDemo or display mode is on, so cooling is disabled while lights and the display still work.Open a refrigerator door and follow the demo mode button steps for your model; many use Refrigerator and Ice Plus.Often a home check
FS / F5The frozen food compartment temperature sensor is shorted, open, or malfunctioning.Needs a technician because the temperature sensor or its wiring needs diagnosis.Usually a technician
rS / r5The fresh food compartment temperature sensor is shorted, open, or malfunctioning.Needs a technician because the fresh food sensor or its wiring needs diagnosis.Usually a technician
dS / F dS / r dSThe defrost sensor is shorted, open, or disconnected; F dS points to the frozen food side and r dS points to the fresh food side.Needs a technician because the defrost sensor circuit needs diagnosis.Usually a technician
IS / 1S / 15The ice maker fan motor has a problem or the ice maker sensor is disconnected.Needs a technician because the ice maker fan or sensor circuit needs diagnosis.Usually a technician
gFThe water flow sensor detected a flow problem, low water pressure, or an ice maker overfill condition.Unplug for 60 seconds, confirm the water supply is open and the visible water line is not kinked, then restart.Often a home check
Od / Er OdThe LCD display and Wi Fi modem are not communicating correctly. Full guide →Unplug for 5 minutes and restart; if Od returns, needs a technician to check the display and Wi Fi communication circuits.Often a home check
SS / 55The pantry or water tank temperature sensor is shorted, open, or not being detected correctly.Needs a technician because the sensor circuit needs diagnosis.Usually a technician
HSThe humidity sensor is shorted, open, or disconnected.Needs a technician because the humidity sensor circuit needs diagnosis.Usually a technician
rTThe room or external temperature sensor is shorted, open, or malfunctioning.Needs a technician because the room temperature sensor circuit needs diagnosis.Usually a technician
C1The LCD display and dispenser are not communicating correctly.Needs a technician because LCD display and dispenser communication use internal boards and wiring.Usually a technician
EIDThe frozen food compartment ice maker sensor has failed.Needs a technician because the ice maker sensor circuit needs diagnosis.Usually a technician
EIUThe frozen food compartment ice maker assembly has failed.Needs a technician because the ice maker assembly needs diagnosis.Usually a technician
iT / 1tThe ice maker has a motor or assembly defect.Needs a technician because the ice maker motor or assembly needs diagnosis.Usually a technician
33The control detected a compressor relay problem.Needs a technician because compressor relay checks involve the compressor circuit.Usually a technician
CH E / E CH / CHThe control detected insufficient cooling or an abnormal internal temperature; causes can include a high side sealed system issue, compressor, valve, blockage, or door issue.Close both doors fully, unplug for 5 minutes, then restart; if it returns, needs a technician to check the sealed system, compressor, or valve.Usually a technician
CL E / E CL / CLThe control detected insufficient cooling or an abnormal internal temperature; causes can include a low side sealed system issue, compressor, valve, blockage, or door issue.Close both doors fully, unplug for 5 minutes, then restart; if it returns, needs a technician to check the sealed system, compressor, or valve.Usually a technician
AS / L AS / r ASThe auto door motor is operating while the reed switch is reading open.Needs a technician because the auto door motor and reed switch circuit did not read correctly.Usually a technician
drThe door motor did not move to the maximum position or home position within the expected time.Needs a technician because the automatic door motor did not reach its full travel or home position in time.Usually a technician
Sb / S6 / 5bSabbath mode is active, so alarms and the dispenser are disabled; on some displays it can resemble 56.On models with the combo, hold Freezer and Wi Fi for three seconds or wait for the timed mode to end.Often a home check
88The refrigerator is functioning properly and is showing a normal diagnostic display.No repair check is needed; exit diagnostics or wait for the normal temperature display to return.Often a home check
FU / Cycle errorThe frozen food compartment did not cool below the expected threshold after startup or warmed above it during operation; analog models may show LEDs at -15°C, -18°C, and -23°C.Unplug for 60 seconds, restart at a direct outlet, confirm doors seal and visible vents are clear, and call a technician if it returns.Often a home check
r2The lower fresh food compartment temperature sensor is reading abnormally.Needs a technician because the lower fresh food temperature sensor circuit needs diagnosis.Usually a technician
ttThe water tank is missing, not inserted correctly, or its detection sensor is malfunctioning.Unplug first, make sure the water tank is seated correctly if your model has one, then restart.Often a home check
Lo / L0The room temperature is below the refrigerator operating range, so performance may be reduced.Move the refrigerator only within the operating room temperature range listed in the manual, then restart once conditions are normal.Often a home check
HIThe room temperature is above the refrigerator operating range, so performance may be reduced.Move the refrigerator only within the operating room temperature range listed in the manual, then restart once conditions are normal.Often a home check
Er Sd / Er CI / Er gSThe control detected an internal component, control circuit, or wiring fault. Full guide →Unplug for 5 minutes and restart; if the code returns, needs a technician because the fault is inside the control or wiring system.Usually a technician
Er IU / Er Id / Er F2The control detected an internal component, control circuit, or wiring fault. Full guide →Unplug for 5 minutes and restart; if the code returns, needs a technician because the fault is inside the control or wiring system.Usually a technician
Er d1 / Er d2 / Er dThe control detected an internal defrost or cooling plate related fault that may involve ice on the cooling plate. Full guide →Unplug for 5 minutes and restart; if the code returns, needs a technician because the defrost or cooling plate system may be faulting.Usually a technician
Er H1 / Er H2The control detected an internal defrost or cooling plate related fault that may involve ice on the cooling plate. Full guide →Unplug for 5 minutes and restart; if the code returns, needs a technician because the defrost or cooling plate system may be faulting.Usually a technician
Er US / Er LS / Er rThe control detected an internal component, control circuit, or wiring fault. Full guide →Unplug for 5 minutes and restart; if the code returns, needs a technician because the fault is inside the control or wiring system.Usually a technician
Er E1 / Er E2The control detected an internal component, control circuit, or wiring fault. Full guide →Unplug for 5 minutes and restart; if the code returns, needs a technician because the fault is inside the control or wiring system.Usually a technician

Don't see your symptom?

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Common questions about appliance repair

Can I reset an LG refrigerator error code?

Yes. Unplug the refrigerator for 5 minutes, plug it back in, and check the display. If the same fault returns, the control is still detecting a problem.

Why does IF, FF, or rF come back after defrosting?

The fan may still be blocked by frost, or the fan motor, sensor, wiring, or control may have failed. Do not remove panels; have a technician check it if a door seal and visible vents look normal.

Are OFF, Sb, and 88 errors?

No. OFF is demo or display mode, Sb is Sabbath mode, and 88 can be a normal diagnostic display.

Why do some models show Er, E, or r before the code?

Prefixes vary by model. Match the main letters or numbers after the prefix, then use the manual for model specific button steps.

Still showing the problem after the checks?

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