LG Washer tE Error Code: Thermistor / Heater Fix

What is the LG Washer tE error?#

tE on an LG washer is a thermistor or control error — the sensor that monitors water temperature is reading out of range, or the heater circuit it watches has faulted. You will notice it on warm, hot, sanitize, or steam cycles, where the water fails to heat, while cold cycles run fine. It does not threaten the machine, but heated washes will not perform. The first thing I check on TrueSteam models is scale buildup, since hard water furs up the heater and skews the reading.

tE on a LG Washer: likely causes and repair cost#

On a LG Washer, the tE code signals: thermistor / control error.

Typical professional repair: $150–$320 · Difficulty: hard · usually a technician job

Symptoms that often accompany tE: Water not heating during warm/hot cycles; Steam function not activating; Cycle running longer than expected; Error appears only on heated cycles

Technician diagnostic sequence for tE:

1. Locate the water temperature thermistor — on LG front-loaders it is mounted in the outer tub near the heater element (if equipped) or at the water inlet
2. Disconnect the thermistor and measure resistance — at room temperature (77F/25C) it should read approximately 10k ohms (NTC type)
3. Check if the washer has a heating element (TrueSteam or AllergyCare models) — the thermistor monitors heater temperature and will fault if the heater circuit is open
4. Inspect the thermistor wire harness for damage from vibration — front-load washers vibrate significantly during spin cycles
5. If the thermistor tests within specification, the issue may be on the main control board analog-to-digital converter circuit

Parts a technician may check or replace: Thermistor; Heater Element — TrueSteam models; Main Control Board

Field note: On LG TrueSteam washers, tE is commonly caused by lime scale buildup on the heater element from hard water, which causes it to overheat locally. Sacramento hard water (16-20 grains) accelerates this — recommend descaling the heater or replacing it every 3-4 years.

How to troubleshoot the tE error yourself#

tE only shows on heated cycles, which itself is a useful clue. Start by powering the washer off and on to clear a transient fault, then run a plain cold cycle to confirm the machine is otherwise healthy. If you are in a hard-water area, run a maker-recommended tub-clean or descale cycle: lime scale on the heater element makes it overheat locally and can trip tE, and clearing that scale sometimes resolves it. Beyond descaling, an owner cannot safely reach the thermistor or heater. Stop and call a technician if tE returns after a reset and a clean cycle: the thermistor or the heater element has failed and has to be metered and replaced, which on this model is rated a hard repair.

Is the LG Washer tE error worth fixing?#

tE is generally worth fixing, especially if you use warm or sanitize cycles. A professional repair runs $150–$320 to replace the thermistor or the heater element and, if implicated, the main control board — below half the cost of a comparable new washer. A thermistor job sits well under my repair-or-replace line. I only lean toward replacement on an older machine where the heater failure arrives alongside motor or bearing wear, at which point the combined cost deserves a hard look against a new unit.

LG Washer tE: frequently asked questions#

What does the tE error mean on a LG Washer?#

tE is a thermistor or control error. The temperature sensor is reading out of range or the heater circuit it monitors has faulted, so the water will not heat on warm and hot cycles.

Is it safe to keep using a LG Washer that shows the tE error?#

Yes, on cold cycles. The fault only affects heated washes, so the machine is safe to use for cold loads while you arrange a repair.

Can I clear the tE error myself, or do I need a technician?#

You can reset the washer and run a descale cycle if hard water is the issue. If tE returns, the thermistor or heater has failed and needs a technician.

How much does it cost to repair the tE error on a LG Washer?#

A professional tE repair typically runs $150–$320, covering the thermistor or heater element and, if needed, the main control board.

Which parts usually fail when a washer throws the tE code?#

The thermistor is the usual failure, followed by the heater element on steam-capable models and, less often, the control board.

Is a LG Washer with the tE error worth repairing?#

Yes, if you value heated cycles. At $150–$320 the repair is well under the cost of a new washer, so it is worthwhile on any sound machine.

Why does thermistor failure trigger the tE error?#

The thermistor reports water temperature to the board so it can control heating. When the sensor drifts out of range or opens, the board cannot trust the reading and posts tE.