LG Dryer Error tE1 – Causes & Fix
The LG dryer's thermistor circuit is reading open or out of range, so the control shuts off heat to be safe.
At a glance
Severity: Moderate
- Meaning
- Thermistor Error – Dryer Can't Read Its Temperature
- System
- LG · Dryer
- Typical repair cost
- $0–$600
- DIY difficulty
- Moderate
LG lists tE1 as a problem with the dryer's thermistor, the small temperature sensor the control uses to regulate heat. When the reading is open, shorted or implausible, the control won't run the heater (or, on gas models, won't allow the burner to light) because it can no longer tell how hot the air is. LG's first recommendation is a reset: unplug the dryer, hold Start/Pause for 5 seconds, then restore power. If tE1 comes back, the cause is almost always physical – the thermistor, its connector, or the wire run to the main board – and the thermistor is an inexpensive part on most LG models. tE2 and tE3 are related thermistor codes; LG associates tE2 with cold conditions or steam cycles.
How it looks on the display
Model families & display variants
| Model family | Shows | Note |
|---|---|---|
| LG electric and gas vented dryers | tE1 | Thermistor problem – no heat until the sensor circuit is valid. |
| Same dryers, related sensor code | tE2 | LG links it to cold installations or steam cycles; clear ice/snow at the vent and retry. |
| Same dryers, related sensor code | tE3 | Another thermistor fault; LG recommends the same reset. |
| Alternate spellings | TE1 / tE 1 | Same code; the display uses lowercase t. |
Safety first · Consult a professional
Unplug the dryer before opening it; electric models are fed with 240 V. On a gas dryer, a technician should handle internal repairs because the thermistor sits near the burner and gas valve.
- Unplug the appliance or switch off the breaker before opening any panel. Mains voltage can kill.
- Hot surfaces and hot water can cause burns. Let the appliance cool down first.
Symptoms
- tE1 appears at the start of a heated cycle or shortly after
- Drum tumbles with no heat, or the cycle stops entirely
- Air-dry and wrinkle-care cycles may still work
- The code clears after LG's reset but returns
- The problem started after the dryer was moved or serviced
Possible causes
Ranked by how often each cause is behind this code (editorial estimate).
- Thermistor failed open or shorted
- Loose or corroded connector at the thermistor or main board
- Wire damaged where the harness passes behind the drum or near hot parts
- Temporary control glitch after a power interruption
- Severe vent restriction pushing temperatures outside the sensor's normal pattern
- Main control board fault
Fix it step by step
Do LG's reset
Unplug the dryer, press and hold Start/Pause for 5 seconds, then plug it back in. This drains residual power from the control and clears a one-off reading error.
Rule out a cold start
If the dryer sits in an unheated garage or porch, let it warm up or run a short air-only cycle first. Very cold readings are more typical of tE2, but they're worth ruling out before opening the cabinet.
Check the vent quickly
Clean the lint screen and confirm the outside flap opens with strong airflow. Heavy restriction can confuse the heat-control logic and usually shows as a d80/d90/d95 warning first.
Tools: Soft brush, Flashlight
Locate and inspect the thermistor
With the dryer unplugged, open the rear or lower panel your model's service sheet specifies and find the thermistor in the air duct. Look for a melted body, a loose plug or a wire pulled out of its terminal.
Tools: Screwdriver, Flashlight
Measure the resistance
Disconnect the thermistor and measure across its two terminals. Many LG dryer thermistors read about 10 kΩ at room temperature (around 77 °F) and drop as they warm; an OL reading or near 0 Ω confirms a failed sensor.
Tools: Multimeter
Check the harness back to the board
If the thermistor measures correctly, check the wires to the main board for continuity and chafing. A good sensor with a broken wire produces the same tE1.
Tools: Multimeter
How to reset tE1
- Unplug the dryer.
- Press and hold Start/Pause for 5 seconds.
- Plug the dryer back in and start a timed heated cycle.
- If tE1 returns, test the thermistor and its wiring.
Where the parts are
- 1Lint filter
- 2Exhaust vent
- 3Heating element
- 4Condenser
- 5Motor
- 6Temperature sensor
- 7Door switch
Repair options & costs
| Repair | DIY? | Estimated cost |
|---|---|---|
| LG reset procedure | Yes | $0 |
| Thermistor replacement (DIY part) | Yes | $15–$40 |
| Thermistor replaced by a technician | No | $140–$260 |
| Harness repair | No | $160–$300 |
| Main control board replacement | No | $300–$600 |
Rough US estimates; technician call-out fees vary by region. Not a quote.
When to call a technician
Book LG service or an appliance technician if tE1 returns after the reset and you're not comfortable testing parts on a 240-volt appliance, or on any gas dryer. Also call if the thermistor tests good – that points to wiring or the main board.
Frequently asked questions
What does tE1 mean on my LG dryer?
It's LG's code for a thermistor problem. The control can't get a sensible temperature reading, so it stops heating until the sensor circuit is fixed.
What's the difference between tE1 and tE2?
Both are thermistor codes. LG ties tE2 to cold conditions or steam cycles and suggests clearing snow or ice from the vent; tE1 more often means the sensor or its wiring has failed.
Will a new thermistor fix tE1 for sure?
Only if the old one tests bad. Measure it first – a normal reading means the connector, the harness or the board is the real problem.
Can I dry clothes on air-only until it's fixed?
Air cycles may run because they don't use the heater, but they won't dry a load efficiently. Use them only briefly and get the sensor fault repaired.
Sources
- Official LG user documentation and support pages (facts only; wording is our own)
- Methodology: How We Build Code Pages · Data Sources We Use · Editorial Policy