LG Dryer Error Codes: Complete List with Fixes

LG dryers — including ThinQ, TurboSteam, DUAL Inverter Heat Pump, and standard electric and gas models — monitor exhaust flow, drum temperature, moisture levels, and door status through a network of sensors. When a sensor reading falls outside safe parameters, your LG dryer displays an error code on the control panel. This guide covers every LG dryer error code with real part numbers, California-specific safety context, and step-by-step repair procedures for 2024–2026 models.

How LG Dryer Error Codes Work

LG dryers display error codes as letter-number combinations on the LED or LCD panel. Some codes are informational (CL for child lock), while others are safety-critical (d95 for near-total vent blockage). Unlike washers, LG dryers do not automatically resume after a power interruption — all codes require manual acknowledgment.

Before troubleshooting:

1. Press Power to turn off the dryer.
2. Unplug from the wall outlet (or flip the breaker) for 60 seconds.
3. Plug back in and attempt a short timed dry cycle to test.

LG's FlowSense system is unique among dryer brands — it actively monitors exhaust airflow and provides graduated warnings (d80, d90, d95) before a vent blockage becomes a fire hazard.

d80 — 80% Exhaust Restriction

The FlowSense system detects that your dryer vent is approximately 80% blocked. Drying performance is degraded and lint accumulation poses a growing fire risk.

Common causes:

• Lint buildup in the exhaust duct between the dryer and the exterior vent
• Crushed or kinked transition duct behind the dryer
• Bird nest or debris in the exterior vent flap
• Vinyl flex duct trapping lint (a fire code violation in California)
• Duct run exceeding LG's maximum 35-foot equivalent length

How to fix:

1. Disconnect the dryer exhaust duct from the back of the dryer and inspect for lint buildup.
2. Use a dryer vent brush kit (long flexible rod with brush head) to clean the entire duct run from the dryer to the exterior vent flap.
3. Check the exterior vent flap for bird nests, lint accumulation, or a stuck damper.
4. Replace any crushed, kinked, or vinyl flex duct with rigid or semi-rigid aluminum duct.
5. After cleaning, run the dryer on high heat for 10–15 minutes and verify hot air is flowing strongly at the exterior vent.

Part cost: No parts needed for most d80 fixes. Professional vent cleaning costs $100–$150 in the Sacramento area.

d90 — 90% Exhaust Restriction

The vent blockage has reached 90% — a serious fire risk. The dryer's thermal fuse may be close to its trip point.

Common causes:

• Severely clogged vent that a standard brush kit cannot reach
• Crushed duct sections at wall transitions or elbows
• Improper duct joints held together with duct tape instead of clamps
• Duct run exceeding maximum length with deductions for elbows

How to fix:

1. Stop using the dryer immediately until the vent is cleaned.
2. Disconnect the dryer and pull it away from the wall to access the full exhaust duct.
3. Use a professional-grade vent brush or hire a vent cleaning service — at 90% blockage, a consumer brush kit may not reach the obstruction.
4. Inspect the entire duct run for crushed sections, improper transitions, or excessive length (LG recommends max 35 feet equivalent, deducting 5 feet per 90-degree elbow).
5. After cleaning, verify airflow by holding a tissue at the dryer exhaust outlet — it should be pulled firmly against the vent opening.

Part cost: If the thermal fuse tripped, replacement (4681EL1008A) costs $8–$20. Professional vent cleaning: $100–$200.

d95 — 95% Exhaust Restriction (Critical)

The vent is nearly completely blocked. Do not operate the dryer. This is an imminent fire hazard.

Common causes:

• Near-total blockage deep in the wall cavity or at an inaccessible joint
• Collapsed duct section inside the wall
• Animal nesting material completely obstructing the exterior vent
• New installation with crushed transition duct behind the dryer

How to fix:

1. Do not operate the dryer — at 95% restriction the exhaust temperature can exceed safe limits and risk igniting trapped lint.
2. Call a professional dryer vent cleaning service. The blockage is likely deep in the wall cavity or at a joint inaccessible to consumer brush kits.
3. Have the technician inspect for animals nesting, collapsed duct sections, or disconnected joints inside the wall.
4. Consider rerouting the vent if the current path exceeds 25 feet or has more than 2 elbows.
5. After professional cleaning, test with a flow gauge — exhaust velocity should be at least 600 feet per minute.

Part cost: Thermal fuse (4681EL1008A) $8–$20 if tripped. Professional vent service: $120–$250.

tE1 / tE2 / tE3 — Thermistor Error

The suffix identifies which thermistor circuit has failed: tE1 is the inlet thermistor, tE2 is the outlet thermistor, tE3 is the gas valve area thermistor (gas models only).

Common causes:

• Thermistor failure from heat cycling fatigue (part EBG61285804 — inlet, EBG61285805 — outlet)
• Wire harness heat damage in high-temperature zones
• Failed main control board ADC circuit
• Gas burner heat degrading the tE3 sensor wire insulation (gas models)

How to fix:

1. Access the appropriate thermistor by removing the top panel (inlet) or lower front panel (outlet).
2. Disconnect the wire leads and test with a multimeter — LG dryer thermistors should read approximately 10k ohms at room temperature (77°F/25°C).
3. Check the wire harness for heat damage — dryer thermistor wiring runs near high-temperature zones and insulation degrades over time.
4. If the thermistor reads within spec, swap a known-good thermistor from another position to confirm the board ADC circuit is functional.
5. On gas models with tE3, check the gas valve wire harness routing near the burner assembly first.

Part cost: Thermistor (EBG61285804/05) $10–$25. High-limit thermostat (6931EL3003D) $15–$30. Professional repair: $130–$250.

dE / dE4 — Door Error

The dryer cannot confirm the door is fully closed and latched.

Common causes:

• Door not fully latched (lint on strike plate)
• Door switch contacts worn from use (part 6601ER1004C)
• Door latch mechanism damaged (part MDS51146501)
• Door hinge sagging from vibration on stacked units (part MEA61937001)

How to fix:

1. Press the dryer door firmly closed until you hear a positive click from the latch mechanism.
2. Inspect the door strike and latch for lint accumulation or debris preventing full engagement.
3. Check the door switch by pressing it with your finger — you should feel a distinct click and the dryer control should beep acknowledging closure.
4. If the switch clicks but the dryer does not respond, test the switch for continuity with a multimeter when pressed.
5. On stacked washer-dryer combos, check the door hinge screws — vibration from the washer below loosens hinges over time.

Part cost: Door switch (6601ER1004C) $8–$15. Door latch (MDS51146501) $10–$20. Professional repair: $40–$130.

PS — Power Supply Error

The dryer is not receiving proper 240V power (electric models) or has an internal power board failure.

Common causes:

• One leg of the 240V supply lost (dryer gets 120V instead of 240V)
• Loose power cord prong causing arcing at the outlet
• Circuit breaker half-tripped (one pole on, one off)
• Internal power supply board failure (part EBR84433506)
• Aluminum wiring connections loosening from thermal cycling (pre-1990 California homes)

How to fix:

1. Check the electrical outlet with a voltmeter — LG electric dryers require 240V (two 120V legs). If one leg is lost, the dryer displays PS.
2. Inspect the dryer power cord prongs for burn marks or discoloration.
3. Check the home circuit breaker panel — a dryer breaker is a double-pole 30A breaker. If one pole tripped while the other remains on, you get half voltage.
4. Reset both poles by switching fully off then on — some breakers trip to a middle position that is not visually obvious.
5. If voltage at the outlet tests correctly at 240V, the internal power supply board may have a failed rectifier or capacitor.

Part cost: Power supply board (EBR84433506) $80–$150. Power cord assembly (EAD63928903) $15–$30. Professional repair: $100–$280.

nP / nE — No Power to Gas Valve (Gas Models)

The gas ignition system is not functioning. The igniter may glow but gas does not flow, or the igniter itself does not activate.

Common causes:

• Gas supply valve behind/beside the dryer not fully open
• Gas valve solenoid coils failed from thermal fatigue (part 5221EL2002A)
• Igniter worn out or broken (part MEE61841401)
• Thermal fuse tripped (part 4681EL1008A)
• Gas supply interruption to the house

How to fix:

1. Verify the gas supply valve on the pipe behind or beside the dryer is fully open.
2. Check if other gas appliances in the home function — if not, the main supply may be interrupted.
3. Remove the lower front panel and observe the igniter during a heat cycle start. The igniter should glow orange.
4. If the igniter glows but gas does not flow, the gas valve solenoid coils have failed. LG gas dryers have two coils (booster and holding) — both must function.
5. Test each coil for resistance: booster coil approximately 300–400 ohms, holding coil approximately 1000–2000 ohms.

Part cost: Gas valve solenoid coil kit (5221EL2002A) $15–$30. Igniter (MEE61841401) $20–$40. Professional repair: $160–$300.

HS — Humidity Sensor Error

The moisture sensor bars inside the drum are not detecting clothing moisture levels correctly, affecting auto-dry cycle accuracy.

Common causes:

• Dryer sheet and fabric softener residue coating the sensor bars (part MEE62002801)
• Sensor bar wire connections loosened by vibration
• Failed main board ADC input for humidity sensor
• Worn sensor bar contact surface

How to fix:

1. Locate the two metal sensor bars inside the dryer drum — they are mounted on the front bulkhead.
2. Clean the sensor bars with a cloth dampened with rubbing alcohol to remove dryer sheet film and fabric softener residue. This is the most common cause.
3. If cleaning does not resolve the error, check the sensor wire connections at the front bulkhead.
4. Test sensor bar resistance: when dry, resistance should be open (infinite); when touched with a damp cloth, resistance should drop to under 100k ohms.
5. Switch to liquid fabric softener in the wash cycle instead of dryer sheets to reduce future buildup.

Part cost: Humidity sensor bar assembly (MEE62002801) $15–$30. Professional repair: $80–$200.

PF — Power Failure

The dryer experienced a power interruption during a cycle.

Common causes:

• House-wide power outage or localized breaker trip
• Loose power cord connection at the wall outlet
• Intermittent 240V supply losing one leg during high-current spin
• Shared circuit with other high-draw appliances

How to fix:

1. Press Power, select the desired cycle, and press Start to resume drying.
2. If PF appears repeatedly without a known outage, check the electrical outlet and power cord for signs of arcing or heat damage.
3. Inspect the home circuit breaker for the laundry room — a breaker that trips during high-draw cycles indicates an overloaded or failing breaker.
4. California electrical code requires a dedicated 30A/240V circuit for electric dryers. Older homes may not comply.

Part cost: No parts needed if caused by actual outage. Power cord assembly (EAD63928903) $15–$30 if damaged.

CL — Child Lock Active

All dryer buttons are disabled. This is a feature, not a malfunction.

How to fix:

1. Press and hold the Child Lock button for 3–5 seconds until the CL indicator disappears.
2. On models without a dedicated Child Lock button, press and hold the Dry Level and Time buttons simultaneously for 3 seconds.
3. If the lock will not deactivate, unplug the dryer for 1 minute — some models reset the lock state on power cycle.

Part cost: No parts needed. If CL appears without being activated and will not clear, the control panel membrane switch may have a short from moisture infiltration — panel replacement (EBR84433510) costs $80–$150.

LG Dryer Diagnostic Modes

1. Smart Diagnosis (Audio): Turn on the dryer and call LG support (1-800-243-0000). When instructed, press and hold the Temperature button while holding your phone speaker near the Power button area. The dryer transmits an audio signal that LG decodes to identify fault history and sensor readings.

2. LG ThinQ App Diagnosis: Open the ThinQ app, select your dryer, and tap Smart Diagnosis. The app communicates via WiFi to pull error logs, temperature readings, and FlowSense vent data.

3. Manual Test Mode: Power on the dryer. Press and hold the Dry Level + Time buttons simultaneously for 3 seconds. The dryer enters test mode, cycling through heater, thermistor, motor, and sensor tests. Each component activates for 10–15 seconds — monitor for components that fail to respond.

Frequently Asked Questions

Q: How do I clear the FlowSense d80/d90/d95 warning on my LG dryer? A: The FlowSense code clears automatically after the vent restriction is resolved. Clean the entire exhaust duct from dryer to exterior, then run a high-heat cycle for 15 minutes. The differential pressure sensor re-measures airflow during this cycle. If the restriction is below 80%, the code clears. There is no manual override — the sensor must detect adequate airflow.

Q: My LG gas dryer heats at first then stops mid-cycle. What error code should I expect? A: This is the classic symptom of failing gas valve solenoid coils (booster coil thermal fatigue). You may see the nP code, but sometimes the dryer does not throw a code — it simply stops heating 15–20 minutes into the cycle, then heats again after cooling. The booster coil works when cool but opens circuit as it heats from burner proximity. Replace the coil kit (5221EL2002A, $15–$30) proactively.

Q: Is the d80 FlowSense warning a fire risk? A: A clogged dryer vent is the leading cause of residential dryer fires — over 2,900 home fires per year in the United States. At d80, the risk is moderate but growing. At d90 and d95, the risk is serious and imminent. LG is the only brand with graduated vent restriction warnings. Take every FlowSense warning seriously and clean the vent system at least annually.

Q: Why does my LG dryer show PS when the outlet works for other appliances? A: LG electric dryers require 240V from a dedicated 30A circuit (two 120V legs). A standard 120V outlet will power the display and motor but not the heating element. PS specifically indicates the dryer is receiving voltage but not the full 240V it needs. If you moved the dryer to a new outlet, verify it is a 240V outlet with the correct NEMA 14-30 or 10-30 configuration.

Q: How often should I clean the humidity sensor bars? A: Every 3–6 months if you use dryer sheets. Fabric softener residue is the number one cause of HS errors and inaccurate auto-dry cycle endings. Clean the two metal bars on the front bulkhead with rubbing alcohol. If you switch to liquid fabric softener in the wash cycle, sensor buildup drops dramatically.

When to Call a Professional

Some LG dryer issues require specialized expertise:

• d95 vent blockage — A near-total blockage deep in the wall requires professional vent cleaning equipment that reaches 25+ feet with powered rotary brushes.
• nP/nE on gas models — Gas dryer repairs involve natural gas or propane lines. If you smell gas strongly, evacuate immediately and call your gas utility. Never test for gas leaks with a flame.
• PS with verified 240V at the outlet — The internal power supply board requires component-level diagnosis. Loose 240V connections at the outlet or breaker are an arc-flash hazard best handled by a licensed electrician.
• Repeated thermistor failures (tE1/tE2) — If thermistors fail again within months of replacement, the heater circuit may have an intermittent short that is overheating the sensors.
• Thermal fuse keeps tripping — A thermal fuse (4681EL1008A) that trips repeatedly after replacement indicates a persistent overheating condition — likely a partially blocked vent or failed cycling thermostat.

Struggling with an LG dryer error code? EasyBear's certified technicians service all LG dryer models — ThinQ, TurboSteam, DUAL Inverter Heat Pump, gas, and electric. We offer free diagnostic visits and carry common LG dryer parts. Our tech diagnoses the issue, explains your options, and completes the repair same-day in most cases. Every repair includes our 90-day parts and labor warranty. Schedule your free diagnosis today.