Author: ApplianceFixGuide Team

Problem: Air exhaust system is 90% clogged. The dryer has detected a critical restriction in the external ductwork and may shut down.

How to Fix Dryer Error

1. Disconnect the flexible vent hose from the back of the dryer.
2. Clean the internal lint filter and the housing it slides into.
3. Clean the flexible vent hose and the wall duct leading outside.
4. Check the exterior vent hood on the outside of the house for crushed louvers or bird nests.
5. Reconnect the vent and run a cycle to clear the code.

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Problem: Air exhaust system is 95% clogged. The dryer is essentially unable to push air out and will likely not heat.

How to Fix Dryer Error

1. Disconnect the flexible vent hose from the back of the dryer.
2. Clean the internal lint filter and the housing it slides into.
3. Clean the flexible vent hose and the wall duct leading outside.
4. Check the exterior vent hood on the outside of the house for crushed louvers or bird nests.
5. Reconnect the vent and run a cycle to clear the code.

Browse all Lg error codes: Lg Error Codes

Problem: No Power to the heater (Electric models only). The control board detects that the dryer is not receiving the full 240V required to run the heating element, usually due to a tripped breaker or loose wire.

How to Fix Dryer Error

1. Go to the home circuit breaker panel.
2. Flip the dryer breakers (usually a double-pole breaker) fully OFF, wait 10 seconds, then flip them ON.
3. Check the terminal block on the back of the dryer for loose screws or burnt wires.
4. Test the outlet voltage with a multimeter; it must read 240V across the two hot legs.

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Problem: Power Supply Error. The main control board detects improper voltage setup (often improper neutral/ground bonding) or high voltage spikes.

How to Fix Dryer Error

1. Unplug the dryer.
2. Inspect the power cord terminal block on the rear of the machine.
3. Ensure the white (neutral) wire is tightly secured in the center and not touching the chassis ground if using a 4-prong cord.
4. Ensure the outlet is wired correctly (L1 to Neutral = 120V, L2 to Neutral = 120V, L1 to L2 = 240V).
5. Restart the unit.

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Problem: Door Error (General). The main control board does not detect that the door is closed.

How to Fix Dryer Error

1. Open the door and inspect the latch assembly for physical damage.
2. Locate the door switch plunger.
3. Press the plunger manually while starting the dryer; if it starts, the door hinge is sagging.
4. If it does not start, unplug the dryer and remove the top panel/front panel to access the switch.
5. Test the switch for continuity with a multimeter.
6. Replace the switch if it shows no continuity when pressed.

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Problem: Door Error 1. The control board assumes the door is open while the cycle is running, or the switch circuit is open.

How to Fix Dryer Error

1. Unplug the dryer.
2. Remove the top panel to access the door switch wiring.
3. Check the wire harness connecting the door switch to the main PCB for breaks or loose connections.
4. Test the door switch for continuity (should be closed when button pressed).
5. If the switch and wiring are good, the main control board door-sensing circuit has failed and the board must be replaced.

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Problem: Door Error 2. The control board assumes the door is CLOSED when it should be open (Switch contacts welded shut).

How to Fix Dryer Error

1. Unplug the dryer.
2. Disconnect the door switch wire harness.
3. Use a multimeter to test the switch terminals without pressing the button.
4. If there is continuity (beep) without pressing the button, the switch is stuck closed.
5. Replace the door switch.

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Problem: Door Lock Error (Specific to dryers with door lock safety mechanisms). The dryer cannot verify the door is locked before operation.

How to Fix Dryer Error

1. Unplug the dryer.
2. Check for an obstruction in the door latch hole.
3. Remove the front panel to access the electronic door lock assembly.
4. Inspect the wiring harness for damage.
5. If wiring is intact, replace the electronic door lock assembly.

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Browse all Lg error codes: Lg Error Codes

Problem: Thermistor Error 1. The thermistor located on the blower housing (or near the heater, depending on model) has failed or provides an abnormal resistance reading.

How to Fix Dryer Error

1. Unplug the dryer.
2. Remove the top and front panel (or rear panel on some models) to access the blower housing.
3. Locate the thermistor (small white sensor with 2 wires).
4. Measure resistance with a multimeter; at room temperature (70°F), it should read approximately 10k Ohms.
5. If the reading is infinite (open) or zero (shorted), replace the thermistor.

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Problem: Thermistor Error 2. The secondary thermistor (often on the ductwork) is reading open or shorted. Often occurs if ambient temperature is below 40°F.

How to Fix Dryer Error

1. Ensure the room temperature is above 45°F.
2. Unplug the dryer and remove the panel covering the heating duct.
3. Locate the secondary thermistor.
4. Unplug the connector and test resistance (should be approx 10k Ohms at room temp).
5. If resistance is out of range, replace the thermistor.

Browse all Lg error codes: Lg Error Codes