LG Washer tE Error Code: What It Means and How to Fix It
Updated · from manufacturer service documentation
The tE code on an LG washer means a Temperature Sensor (thermistor) fault. Per the service documentation, this can stem from a non-calibrated main board, a short circuit, a sensor electrode contaminated with detergent or hard-water buildup, or a genuinely failed sensor — most of these are checkable and fixable without replacing the whole assembly.
What Causes the tE Code
| Cause | Likelihood | DIY difficulty | Related part |
|---|---|---|---|
| Sensor electrode contaminated (detergent film, hard water scale, laundry additives) | Most common | Easy — clean electrode | Temperature sensor |
| Non-calibrated main board after a board replacement | Common | Moderate — recalibrate via test mode | Main board |
| Connector or wiring harness to the sensor loose/disconnected | Less common | Moderate — check connector/harness | Wiring harness |
| Short circuit in the sensor circuit | Less common | Moderate — QC test mode check | Temperature sensor |
| Sensor genuinely out of order | Less common | Moderate — replace sensor | Temperature sensor |
How to Fix the tE Error, Step by Step
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Clean the sensor electrode
Detergent film, laundry additive residue, or hard-water scale on the sensor electrode is a documented cause of tE — cleaning it resolves this without any part replacement.
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Reset the sensor by entering and exiting Test Mode
Per the service documentation, this clears certain sensor-state faults on its own.
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Verify the sensor in QC Test Mode
Check the value of the sensor electrode during a normal operation (washing, rinsing, spinning) — if the value shows no change throughout, the sensor is confirmed defective.
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Check the connector and wiring harness to the sensor/thermistor
On the WT5070C platform specifically, this means checking the connector at the PCBA (YL2) or the thermistor connection, and checking for a cut connection between the PCB and thermistor with a tester.
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Recalibrate or replace the controller if the board was recently replaced
A non-calibrated main board is a documented cause distinct from a sensor hardware failure.
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Replace the sensor if it tests defective, or replace the main board if the sensor checks out but the fault persists
Which Models This Applies To
Documented across the LG top-load service manual (general Sensor Failure diagnostic, covering the temperature sensor along with other sensor types) and the WT5070C platform (thermistor-specific connector/PCBA check). Per LG's training documentation for the WM0742HGA, tE (along with PE and dE) gets a shorter 20-second automatic shutoff timeout if not cleared, compared to 4 minutes for other error codes — see the dE code page for that timing detail.
See also: LG washer dE. Full list: all LG washer error codes.
Frequently Asked Questions
What does tE mean on an LG washer?
Temperature Sensor (thermistor) fault — the control detected a problem reading the wash water temperature.
Can a dirty sensor really cause tE?
Yes — detergent film, laundry additive residue, or hard-water scale buildup on the sensor electrode is explicitly documented as a cause, and cleaning it can resolve the fault without replacing anything.
How do I test whether the sensor itself has failed?
In QC Test Mode, watch the sensor electrode value during a normal wash/rinse/spin cycle — if it never changes, the sensor is confirmed defective.
How quickly does the washer shut off if tE isn't cleared?
Per LG's documentation, tE (along with PE and dE) triggers an automatic shutoff after just 20 seconds if not cleared — much faster than the 4-minute timeout for most other error codes.
Based on the LG top-load washer service documentation, the WT5070C service manual, and the WM0742HGA training manual. Last updated: .