What Does Error Code DE Mean?

Error DE on your LG Washing Machine means: The LG Washing Machine error code DE indicates a door error, where the lid or door is not closing properly. This error is often accompanied by a loud clicking or buzzing sound when you try to close the door. If not resolved, it can prevent the washing machine from functioning correctly and may cause further damage to the appliance.

What You'll Need

🔧 Tools

Phillips #2 screwdriver
Torx T20 screwdriver
Multimeter (for testing electrical components)

🛒 Parts

Door Strike Assembly

How to Fix Error DE — Step by Step

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Step 1: Reset the Washing Machine

First, try resetting the washing machine by unplugging it from the power outlet for 30 seconds. This will clear any temporary errors and may resolve the issue. Once the machine is unplugged, press and hold the 'Power' button for 10 seconds to discharge any residual power. After 10 seconds, release the button and plug the machine back in. If the error persists, proceed to the next step.
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Step 2: Check the Door Strike Assembly

The door strike assembly is responsible for ensuring the door closes properly. To check the assembly, open the top panel of the washing machine by removing the screws with a Phillips #2 screwdriver. Locate the door strike assembly and inspect it for any signs of wear or damage. Check the mounting screws to ensure they are tightened securely. If the assembly is damaged or loose, replace it with a new one.
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Step 3: Inspect the Door Latch and Switch

The door latch and switch work together to detect when the door is closed. Inspect the latch and switch for any signs of wear or damage. Check the electrical connections to ensure they are secure and not corroded. If the latch or switch is damaged, replace it with a new one.
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Step 4: Check the Door Sensor

The door sensor is responsible for detecting when the door is closed. To check the sensor, locate it behind the door and inspect it for any signs of wear or damage. Check the electrical connections to ensure they are secure and not corroded. If the sensor is damaged, replace it with a new one.
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Step 5: Replace the Door Strike Assembly (if necessary)

If the door strike assembly is damaged or worn out, replace it with a new one. Make sure to purchase the correct assembly for your LG washing machine model.

When to Call a Professional

When the diagnosis points to a major component failure, or if the error persists after attempting the above steps, a professional diagnosis might save you time and money. They can verify whether a replacement part is genuinely needed before you buy one.

Field note: DE is almost always the door/lid switch or strike, not the main board. On LG Washing Machines the control will not start a cycle if it cannot prove the door is closed and locked. Check the strike alignment and the lock click before any board. A door that ‘looks closed’ still throws this.

What this code is not

Not a wash-motor or heater failure.
Not fixed by a 3-second cancel if the strike is bent or the latch is gummed with detergent.
A door that slams but does not click the switch will keep DE forever.

The LG Washing Machine error code DE can be frustrating, especially when you’re in the middle of a laundry cycle. This error indicates that the lid or door is not closing properly, which can prevent the washing machine from functioning correctly. If you’re seeing this error code, it’s essential to address it promptly to avoid further damage to the appliance.

What Triggers This Error Code

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

1. Faulty Door Strike Assembly

Description: The door strike assembly is responsible for ensuring the door closes correctly. If it’s damaged or worn out, the door may not close properly, triggering the error code DE.
How to verify: Inspect the door strike assembly for any signs of damage or wear. Check if the assembly is loose or misaligned.
Fix difficulty: Medium
Cost: $50-$100 (part cost)

2. Misaligned Door

Description: If the door is misaligned, it may not close properly, triggering the error code DE.
How to verify: Check if the door is properly aligned with the door strike assembly.
Fix difficulty: Easy
Cost: $0 (no parts needed)

3. Faulty Door Sensor

Description: The door sensor detects when the door is closed. If it’s faulty, the washing machine may not detect when the door is closed, triggering the error code DE.
How to verify: Test the door sensor using a multimeter. Check if the sensor is receiving power and if it’s sending the correct signal to the control board.
Fix difficulty: Hard
Cost: $100-$200 (part cost)

4. Faulty Door Latch or Switch

Description: The door latch and switch work together to detect when the door is closed. If either component is faulty, the washing machine may not detect when the door is closed, triggering the error code DE.
How to verify: Inspect the door latch and switch for any signs of damage or wear. Test the components using a multimeter.
Fix difficulty: Medium
Cost: $50-$100 (part cost)

The Primary Fix — Detailed Guide

The most common cause of the LG Washing Machine error code DE is a faulty door strike assembly. Here’s a step-by-step guide to fix this issue:

Tools needed: Phillips #2 screwdriver, Torx T20 screwdriver

Time estimate: 30 minutes

Safety warning: Unplug the washing machine from the power outlet before starting the repair.

Locate the door strike assembly: The door strike assembly is usually located on the washing machine’s frame, near the door.
Remove the screws: Remove the screws holding the door strike assembly in place using a Phillips #2 screwdriver.
Inspect the assembly: Inspect the door strike assembly for any signs of damage or wear.
Replace the assembly: If the assembly is damaged or worn out, replace it with a new one.
Reassemble: Reassemble the washing machine in the reverse order that you disassembled it.

Specific Quirks by Model Number

Some LG washing machine models are more prone to the error code DE than others. Here are some model-specific differences:

LG WM3997HWA: This model is known to have issues with the door strike assembly.
LG WM3997HWA Recall: There was a recall on this model due to issues with the door strike assembly.

Budget Planning: Repair Costs

Here’s a breakdown of the repair costs:

DIY Cost	Parts Cost	Professional Labor
$50-$100	$50-$100	$150-$300

Avoiding Future Occurrences

To prevent the LG Washing Machine error code DE from occurring, follow these maintenance tips:

Regularly clean the door seal: Clean the door seal regularly to prevent debris buildup.
Check the door alignment: Check the door alignment regularly to ensure it’s proper.
Lubricate the door hinges: Lubricate the door hinges regularly to prevent wear and tear.

Red Flags That Mean Call a Repair Service

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 signs that you need professional help:

The error code persists: If the error code DE persists after trying the above steps.
You’re not comfortable with DIY repairs: If you’re not comfortable with DIY repairs or if you’re not sure about the cause of the issue.

Related Troubleshooting Guides

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