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tE1

LG Dryer

Severity: Moderate

Source: OnlyErrorCodes.com — Every error code. One place.

LG Dryer tE1 Error — Inlet Thermistor Fault Fix

What Does This Error Mean?

tE1 is the inlet thermistor (temperature sensor) — the probe that monitors air temperature entering the drum.
If it reads out of range, the dryer can't safely manage heat.
Power-cycle once.
If tE1 persists, the sensor needs replacement.
Total repair: 100–200 USD service-tech work.

Affected Models

  • LG DLE series electric
  • LG DLG series gas
  • LG TurboSteam
  • LG SignaturePRO
  • LG smart dryer

Common Causes

  • Inlet thermistor failed (open or shorted)
  • Sensor wire disconnected from controller
  • Sensor coated with lint preventing accurate reading
  • Connector loose at controller
  • Controller sensor input damaged

How to Fix It

  1. Power-cycle the dryer.

    Press Power off.
    Unplug for 10 minutes.
    Plug back in.
    Try a cool-air or no-heat cycle.
    Some tE1 events are transient and clear after a fresh boot.
    If it returns within minutes, the sensor is genuinely faulty.

  2. Clean the lint trap thoroughly.

    Pull the lint trap, clean off all visible lint.
    Wash with warm soapy water if there's softener buildup.
    Vacuum the slot beneath the trap.
    Restricted airflow makes the inlet sensor read high, sometimes triggering false tE1 events that go away after airflow is restored.

  3. Check the exhaust hose.

    Pull the dryer forward and inspect the back where the exhaust hose connects.
    Disconnect the hose, look inside.
    Lint buildup restricts airflow and stresses the heating system.
    Vacuum or replace if heavily clogged.

  4. Try a no-heat cycle.

    Run a cycle with No Heat selected.
    If tE1 doesn't appear without heat, the issue is specifically in heating-related sensing.
    Use no-heat cycles as a workaround until repaired (works for delicates and some loads).
    Heated cycles need full repair.

  5. Schedule LG service.

    Provide model and serial numbers.
    Inlet thermistor replacement is 1–2 hours labor plus a 30–60 USD part.
    Total bill 150–250 USD out of warranty.
    Free under warranty.
    Worth doing — most users need heated cycles for normal loads.

Frequently Asked Questions

Is the inlet thermistor the same as the outlet thermistor?

No — there are two: inlet (air going in) and outlet (air coming out).
tE1 specifically refers to the inlet sensor.
tE3 or tE4 codes (model-dependent) indicate the outlet sensor.
Different fix locations but similar replacement procedures.

Why does lint affect the sensor?

When lint coats the thermistor probe, it insulates the probe from the actual airflow temperature.
The sensor reads cooler than reality, the dryer compensates by heating more, and eventually the sensor's resistance drifts out of expected range — triggering tE1.
Annual deep cleaning prevents this.