LG Dryer Error Codes — tE1/tE2/tE3, HE, dE, d80/d90/d95, nP, PF Complete Guide

Common Symptoms

• Error code displayed on the front control panel (tE1, tE2, tE3, HE, dE, d80, d90, d95, nP, PF, FE, OE, AE, E6)
• Dryer stops mid-cycle and displays a code
• Clothes not drying — dryer runs but no heat (HE code)
• Dryer door appears closed but dE code displays
• d80/d90/d95 code appears — dryer shuts down citing duct issue
• Dryer starts then immediately stops with nP or PF code

Most Likely Causes

1. 1

   tE1 / tE2 / tE3 — Thermistor Failure

   tE1 indicates the outlet thermistor (exhaust air temperature sensor) has failed or reads out of range. tE2 indicates the inlet thermistor failure. tE3 indicates a third thermistor fault on some condensing or heat pump models. LG dryer NTC thermistors read approximately 10,000–11,000Ω (10–11kΩ) at room temperature (68–72°F) and resistance decreases as temperature increases. To test: unplug the dryer, disconnect the thermistor connector, and measure resistance at room temperature. 10–11kΩ = functional. OL (open) or near 0Ω = failed, replace. The outlet thermistor on most LG electric and gas dryers is mounted at the exhaust duct outlet port inside the drum rear. Common part numbers: 6323EL2001E, 6323EL2001G.

2. 2

   HE — Heating Element Failure (Electric) or Gas Valve Fault (Gas)

   HE indicates the dryer is not reaching the target drum temperature within the expected time. On electric dryers (DLEX5500V, DLE7300VE, DLE3500W): the primary cause is a burned-out heating element. Test element resistance: disconnect the element leads and measure across the terminals. A functional LG electric dryer heating element reads 8–12Ω. OL = failed, replace. Also test the high-limit thermostat in series with the element — should read continuity (closed). On gas dryers (DLGX5501V, DLGX3701V): HE typically means the gas valve coils have failed or the igniter is burned out. Test gas valve coils: primary coil reads approximately 1,240Ω; secondary radiant sense coils each read approximately 540Ω. Deviation of more than 10% from spec = replace the coil kit. The igniter is a silicon carbide element that glows orange-red — no glow after 30 seconds of heat call = failed igniter.

3. 3

   dE / dE1 / dE2 — Door Switch or Latch Failure

   dE indicates the control board does not detect the door as closed. dE1 and dE2 refine the fault to specific door switch circuits on models with dual door sensors. Primary causes: worn door latch striker (plastic tab on the door that engages the latch), failed door switch (microswitch inside the door catch housing), or wiring harness damage from repeated door flex. Test: open the door and locate the door switch assembly inside the door catch area. Use a multimeter on continuity mode and actuate the switch manually — it should click open/closed. Resistance across closed contacts: near 0Ω. If the switch does not click or reads OL when closed, replace it. Common part: 6601EL3001A.

4. 4

   d80 / d90 / d95 — Flow Sense Duct Blockage Detection

   LG's Flow Sense system measures exhaust airflow using the outlet thermistor and a pressure differential algorithm. d80 = approximately 80% of normal airflow blocked; d90 = 90% blocked; d95 = 95% blocked. At d95, the dryer shuts down automatically because the lint concentration in the duct poses an active fire risk. Root causes: lint-packed trap, kinked or crushed flexible duct, lint buildup in the 4-inch rigid duct run, or a blocked vent termination cap. Clear lint trap fully, inspect duct for kinks, clean the full duct run with a vent brush, and check the exterior vent termination. After clearing, run a drying cycle — d80/d90/d95 should clear automatically.

5. 5

   nP — Neutral or Power Line Fault

   nP on an LG gas dryer indicates the neutral wire is not present or there is a power supply issue. LG gas dryers require a standard 120VAC/15A outlet. nP can indicate: no neutral conductor at the outlet, a tripped breaker upstream, a wiring error at the outlet (neutral and ground swapped), or a loose connection at the terminal block inside the dryer. Test: measure voltage at the outlet. You should read 120VAC line-to-neutral. If the outlet reads 120VAC line-to-ground but 0VAC line-to-neutral, the neutral is missing — a panel or outlet wiring fault that must be corrected before operating the dryer.

6. 6

   PF — Power Failure; FE — Frequency Error; OE/AE/E6 — Drain or AOU Fault

   PF indicates the dryer detected a power interruption during the previous cycle — press Start to resume or clear the code. FE indicates the incoming AC frequency is out of the 60Hz range; rare on standard residential circuits but can appear with generator use or failing main breaker. OE appears only on LG ventless condenser dryers and indicates the condensate drain pump has failed or the drain hose is kinked. AE or E6 indicates an AOU communication fault on LG models connected to an integrated washer-dryer pedestal — verify the ribbon cable connector between units is fully seated.

Quick DIY Checks

1. 1Power-cycle reset and code documentation: record the exact error code displayed — photograph the panel. Unplug the dryer from the wall outlet for 5 minutes (gas dryers: note the gas shutoff valve location but do not close it for a code reset). Plug back in. If the code clears and does not return within one cycle, it was a transient fault. If the same code returns, proceed with targeted diagnosis for that specific code. Note: d80/d90/d95 codes almost never clear with a power cycle alone — they require physical duct clearing.
2. 2Clear d80/d90/d95 Flow Sense codes — duct blockage procedure: pull the lint screen completely out and clean it. Use a vent cleaning brush to clean 6 inches into the lint trap slot. Pull the dryer away from the wall and inspect the flexible duct transition — it must be 4-inch rigid aluminum, not crushed vinyl. Straighten any kinks. Disconnect the duct at the dryer and at the wall. Use a vent brush kit on a flexible rod to push lint through the entire duct run from both ends. Check the exterior vent termination — clear bird nests, snow, or a stuck flapper damper. Reconnect and run a timed dry cycle. If the code persists after a fully clean duct, reset Flow Sense calibration by pressing and holding Temp + Signal buttons simultaneously for 3 seconds.
3. 3Diagnose tE1/tE2/tE3 thermistor codes — resistance test: unplug the dryer. On electric models (DLEX5500V, DLE7300VE, DLE3500W): remove the back panel (8–10 screws). The outlet thermistor is mounted at the exhaust outlet port at the bottom rear of the drum housing — a small probe with a two-wire connector. Disconnect the connector and set the multimeter to resistance mode. At room temperature (68–72°F), spec is 10,000–11,000Ω (10–11kΩ). OL = open/failed. Near 0Ω = shorted/failed. On gas models (DLGX5501V, DLGX3701V): access the thermistors through the front panel lower access cover or the rear panel. Apply ice or cold water to a suspect thermistor while watching the resistance reading — resistance should increase as the sensor cools. If resistance does not change with temperature, the sensor is failed.

1. 4Diagnose HE code on electric dryers — heating element and thermostat test: unplug the dryer and remove the back panel. The heating element box is the large metal enclosure in the lower rear. Disconnect both heating element leads from the terminal block. Set multimeter to resistance mode and probe across the element terminals. Spec: 8–12Ω. OL = failed element, replace. Also test the high-limit thermostat mounted on the element box housing: continuity at room temperature = functional; OL = failed, replace. If both element and thermostat test good but HE still appears, test the thermal cutoff fuse (typically mounted on the exhaust duct near the heating box): continuity = functional; OL = blown cutoff fuse — replace and find the root cause (clogged vent).
2. 5Diagnose HE code on gas dryers — gas valve coil and igniter test: unplug the dryer and close the gas supply valve at the wall. Remove the front lower kick panel to access the burner assembly. Disconnect the gas valve coil wiring harness. Set multimeter to resistance mode. Measure each coil: primary (boost) coil reads approximately 1,240Ω; secondary radiant sense coils each read approximately 540Ω. A coil reading OL or outside these specs by more than 15% has failed — replace the coil kit. The igniter is the fragile silicon carbide rod mounted at the burner tube inlet. Measure continuity across the igniter leads — functional igniters typically read 50–200Ω. OL = burned out, replace. Igniters are 0–5 and are the most frequent gas dryer heating failure after the valve coils.
3. 6Diagnose dE/dE1/dE2 door switch codes: inspect the door latch area. Look for the plastic striker tab on the door edge — if broken or worn, the door switch never actuates. Close the door and push firmly — if the dE code clears with extra pressure, the latch striker is worn. With the dryer unplugged, open the door and locate the door switch microswitch inside the latch catch housing. Use a flat-blade screwdriver to manually depress the switch plunger while measuring continuity across the switch terminals. Switch should be open (no continuity) when unpressed and closed (continuity) when pressed. No change = failed switch, replace. Common part: 6601EL3001A. Also inspect the wiring harness from the door switch to the control board for pinched wires at the door hinge point.
4. 7Diagnose nP code and verify power supply: for gas dryers displaying nP, measure the outlet voltage with a multimeter before opening the dryer. Set to AC voltage mode. Measure line-to-neutral across the outlet slots: should read 120VAC. Measure line-to-ground: should also read 120VAC. Measure neutral-to-ground: should read near 0V. If neutral-to-ground reads 120V, neutral and ground are swapped — a wiring fault at the outlet. If line-to-neutral reads 0V but line-to-ground reads 120V, the neutral is missing — a panel or outlet wiring fault. Correct the outlet wiring before proceeding. After confirming the outlet is correct, if nP still appears check the terminal block connections inside the dryer (rear access panel) — a loose neutral wire at the terminal block causes the same code.

Repair vs Replace

Recommended Tools & Parts

• LG Dryer Thermistor — 6323EL2001E / 6323EL2001G

  NTC outlet temperature thermistor for LG dryers. Reads 10,000–11,000Ω at room temperature. Mounts at the exhaust duct outlet port. Covers tE1 and tE2 fault codes. Verify part number by model — 6323EL2001E fits most DLEX and DLGX series.

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• LG Electric Dryer Heating Element

  Replacement heating element for LG electric dryers (DLEX5500V, DLE7300VE, DLE3500W). Resistance spec: 8–12Ω. Mounted in the heating element box at the rear of the drum. Common part numbers include EAU61383510 and 5301EL1001H.

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• Gas Valve Coil Kit for LG Gas Dryers

  Replacement gas valve coil kit for LG gas dryers (DLGX5501V, DLGX3701V). Includes primary coil (1,240Ω) and secondary radiant sense coils (540Ω each). Replace the full kit when any coil fails. Common part: 5220FR2008B.

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• LG Dryer Door Switch — 6601EL3001A

  Replacement door switch microswitch for LG dryers. Fixes dE, dE1, dE2 error codes. Mounts inside the door latch catch housing. Open/closed at room temp verifiable by continuity test.

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• Dryer Vent Brush Kit — 4-Inch Flexible Rod

  Required to clear d80/d90/d95 codes. Flexible rod sections to clean the full duct run from both ends. Use for the 4-inch rigid duct plus the full run to the exterior vent.

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Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

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