LG dryer thermistor
Replace only after checking airflow, connectors, and resistance against the model service data.
$10-$35
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LG dryer E1 or tE1 usually points to the thermistor temperature-sensor circuit. The thermistor tells the control board how hot the exhaust air is. If the reading is open, shorted, or far outside the expected range, the dryer can stop and show the code.
Some owners read the display as E1 when the dryer is actually showing tE1. Treat either version as a temperature-sensor and airflow diagnostic first.
Quick Checks
| Check | What to do | Why it matters |
|---|---|---|
| Power reset | Unplug the dryer or turn off the breaker for five minutes | Clears a temporary control fault |
| Lint screen | Wash residue from the screen | Restores airflow |
| Exhaust duct | Clean the full vent run | Prevents overheating and false sensor symptoms |
| Thermistor plug | Inspect for loose or corroded pins | Finds a simple open circuit |
| Thermistor resistance | Compare against service data | Confirms whether the sensor is out of range |
Fix LG Dryer E1 or tE1
- Stop the dryer and unplug it.
- Clean the lint screen with warm water and mild soap, then let it dry.
- Disconnect and clean the exhaust duct. Confirm the exterior vent flap opens freely.
- Restore power and run a short no-heat or air-only test. If the code returns, unplug the dryer again.
- Access the thermistor near the blower or exhaust duct area for your model.
- Reseat the connector and inspect the harness for pinched wires, corrosion, or loose terminals.
- Test thermistor resistance with a multimeter and compare it to the service sheet for the exact model.
- Replace the thermistor if it is open, shorted, or far outside spec.
When to Call a Technician
Call an appliance technician if the thermistor and harness test good but the code returns. The control board input may have failed, and replacing the board without testing can waste money.
If the dryer overheats, smells hot, or trips a thermal fuse, stop using it until airflow and temperature controls are verified.