LG Washing Machine Error Code tE — How to Fix (Thermistor / water heating sensor error)

Field note: tE is a temperature circuit complaint (NTC / heater / wiring), not a software glitch. On LG Washing Machines measure the sensor out of circuit at room temperature and watch it change when warmed in your hand. Open or dead-short sensors get blamed on ‘the board’ constantly. Prove the NTC before you buy a control.

What this code is not

• Not a vent-clog code on a washer or dishwasher (dryers are different).
• Not a firmware update you download from a forum.
• An NTC that reads OL or 0 Ω is the part — leave the board alone.

If you’re seeing the LG Washing Machine error code tE on your appliance’s display panel, it can be frustrating and confusing. This error code indicates a problem with the thermistor or water heating sensor, which is crucial for regulating water temperature during wash cycles. In this comprehensive guide, we’ll walk you through what the tE error code means, how to diagnose the issue, and steps to fix it.

Diagnose This in 5 Minutes (Before Calling Anyone)

Before calling a professional or spending money on repairs, perform these quick diagnostic checks:

• Power Cycle: Unplug the washing machine from the power outlet, wait for 5-10 minutes, and then plug it back in. This simple reset can sometimes resolve the issue.
• Check the Thermistor or Water Heating Sensor: Locate the thermistor or water heating sensor and verify that it’s properly connected and not damaged.
• Inspect the Water Inlet: Ensure that the water inlet is not clogged and that the water supply is turned on.
• Check for Blockages: Verify that there are no blockages in the drain hose or pump filter.

What’s Actually Failing Inside

Here are the common causes of the LG Washing Machine error code tE, ranked by likelihood:

1. Faulty Thermistor or Water Heating Sensor

• Description: A faulty thermistor or water heating sensor can provide incorrect temperature readings, triggering the tE error code.
• How to Verify: Use a multimeter to test the resistance of the thermistor or sensor. Compare the readings to the manufacturer’s specifications.
• Fix Difficulty: Medium
• Cost: $20-$50 (part cost)

2. Loose or Corroded Connections

• Description: Loose or corroded connections to the thermistor or water heating sensor can cause faulty readings.
• How to Verify: Inspect the connections and clean or replace them if necessary.
• Fix Difficulty: Easy
• Cost: $0-$10 (part cost)

3. Clogged Water Inlet or Heating Element

• Description: A clogged water inlet or heating element can prevent the washing machine from heating water properly.
• How to Verify: Inspect the water inlet and heating element for blockages or mineral buildup.
• Fix Difficulty: Medium
• Cost: $20-$100 (part cost)

4. Faulty Control Board

• Description: A faulty control board can fail to process temperature readings from the thermistor or water heating sensor.
• How to Verify: Test the control board using a multimeter or replace it if necessary.
• Fix Difficulty: Hard
• Cost: $100-$200 (part cost)

5. Wiring Issues

• Description: Damaged or frayed wiring can cause communication errors between the thermistor or water heating sensor and the control board.
• How to Verify: Inspect the wiring and connections for damage or wear.
• Fix Difficulty: Medium
• Cost: $20-$50 (part cost)

How to Fix This (Step by Step)

The most common cause of the LG Washing Machine error code tE is a faulty thermistor or water heating sensor. Here’s a step-by-step guide to replace it:

Tools needed: Multimeter, Phillips screwdriver, T20 Torx screwdriver

Time estimate: 30-60 minutes

Safety warnings:

• Unplug the washing machine from the power outlet before starting the repair.
• Wear protective gloves and safety glasses.

Step-by-Step Instructions:

1. Locate the thermistor or water heating sensor, usually found near the heating element or inside the tub.
2. Disconnect the electrical connector from the thermistor or sensor.
3. Use a multimeter to test the resistance of the thermistor or sensor. Compare the readings to the manufacturer’s specifications.
4. Remove the screws holding the thermistor or sensor in place.
5. Gently pull out the thermistor or sensor from its mounting bracket.
6. Install the new thermistor or sensor, ensuring it’s properly seated and secured.
7. Reconnect the electrical connector to the thermistor or sensor.

What “fixed” looks like vs “still broken”:

• If the tE error code disappears after replacing the thermistor or sensor, the repair is successful.
• If the error code persists, you may need to investigate other causes, such as loose connections or a faulty control board.

Your Model’s Unique Considerations

The LG Washing Machine error code tE can affect various models, but some are more prone to this issue than others. Here are some model-specific differences:

• LG WM3997HWA: This model is known to have issues with the thermistor or water heating sensor, which can cause the tE error code.
• LG WM3997HWA Recall: There is no recall for this model, but LG has issued a technical bulletin addressing the issue.

Repair Pricing Guide

Here’s a breakdown of the estimated repair costs for the LG Washing Machine error code tE:

Stop This Problem Before It Starts

To prevent the LG Washing Machine error code tE from recurring, follow these maintenance tips:

• Regularly clean the washing machine: Run a cleaning cycle every 1-2 months to remove detergent residue and debris.
• Check and replace worn-out parts: Inspect the thermistor or water heating sensor regularly and replace it if necessary.
• Verify proper installation: Ensure the washing machine is installed on a level surface and properly vented.

Beyond DIY: Professional Repair Indicators

If you’re not comfortable with DIY repairs or if the issue persists after trying the above steps, it’s time to call a professional. Here are some scenarios where you should seek help:

• Severe symptoms: If the washing machine is leaking, making strange noises, or not functioning at all.
• Unfamiliarity with repairs: If you’re not comfortable with DIY repairs or don’t have experience with washing machine maintenance.
• Warranty coverage: If your washing machine is still under warranty, contact LG customer support for assistance.

LG Customer Support: 1-800-243-0000

Related Lg Washing Machine codes

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• LG Washing Machine Error Code FE — How to Fix (Fill error)
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