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ErrBase

DL Error on LG Washer: Door Lock Mechanism Failure

Quick Answer

DL is different from DE. With DL, the door is physically closed and latched - but the electric lock mechanism inside the door lock assembly did not engage. This is a solenoid or wiring issue, not a mechanical alignment problem.

Here's what I actually see when I get called out for this. Nine times out of ten it's either a loose harness connector that vibrated free over a few years of spin cycles, or the solenoid coil is just done. Ignore it and the washer won't run at all, which means wet laundry going nowhere. The lock assembly is a $25-45 part and honestly one of the easier repairs on these LG front-loaders.

LgWasherSeverity: moderateDifficulty: intermediate82% DIY Success
Time to Fix
20–60 min
Difficulty
intermediate
Parts Cost
$20 – $45
Tools Needed
Phillips #2 screwdriver, Flathead screwdriver (for gasket lip)

What Does the DL Code Mean?

OK so here's the deal with DL. Your door is closed and latched, the machine knows it's closed, but the electric solenoid that physically locks it never confirmed back to the control board. I replaced three of these lock assemblies just last week on WM3700 and WM4000 machines. It's not an expensive fix, usually $25-45 for the part and about an hour of your time. The two-stage system LG uses is clever but it means there's one more thing that can fail, and that second stage is what DL is about.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Failed door lock solenoid (actuator)40%
Wiring harness to door lock assembly loose or damaged24%
Door lock assembly circuit board failed14%
Lock assembly worn — solenoid engages intermittently12%
Control board not sending correct voltage to lock solenoid10%

Symptoms You May Notice

  • DL shows the moment you try to start a cycle and the machine just sits there doing absolutely nothing.
  • Door clicks shut, feels completely latched, but the washer won't start and DL is on the screen.
  • Machine was running fine mid-cycle during spin, then stopped hard and threw DL. You might have heard a clunk when it happened.
  • DL appears randomly, clears when you open and close the door, then comes back a few cycles later. That's a classic intermittent solenoid or a connector that's almost but not quite seated.
  • You can actually hear the machine try to lock, there's a click or a buzz, and then DL shows instead of the cycle counting down.

Can you reset a Lg washer to clear the DL code?

After fixing the underlying issue, unplug the washer completely and leave it unplugged for at least 5 minutes. This clears the fault from the control board's memory. Plug back in, close the door firmly until you hear the latch click, press Power, pick a short cycle like Rinse+Spin, and hit Start. You should hear the solenoid engage within the first few seconds. No DL means you're good to go.

Tools Required for Diagnosis

Phillips #2 screwdriverFlathead screwdriver (for gasket lip)Multimeter with resistance and voltage modesNeedle-nose pliers (for gasket band clamp)Flashlight or headlamp

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test
Expected Range30–200 ohms (solenoid coil)
ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Door Lock AssemblyAGF76349501 · $20–$45

Frequently Asked Questions

Why does DL show but my door seems locked?
The latch hook and the electric solenoid are two totally separate systems. The latch click you hear is the mechanical engagement, that's working fine. DL means the solenoid pin never extended or never sent its confirmation signal back to the control board. So the door feels latched because it mechanically is, but the board has no proof the electric lock engaged. It won't start a cycle without that confirmation.
Can I open the door when DL is active?
If DL appeared and the solenoid never engaged, the mechanical latch is probably the only thing holding the door closed. Press Pause and wait 2-3 minutes for a normal unlock attempt. If the washer is completely unresponsive, look for the manual emergency release. On most LG front-loaders it's a small pull tab or loop tucked inside the lower access panel at the bottom front. Pop that panel off, find the tab, and pull it slowly to release the mechanical latch.
Is the door lock assembly the same as the door latch?
No, and this trips people up constantly. The door latch is the plastic hook on the door itself that swings in and catches the strike. The door lock assembly is the electrically-controlled unit inside the washer cabinet that receives that hook. It contains both the switch that detects closure and the solenoid that physically locks the door. DL is about the lock assembly. DE can involve either the latch on the door or the assembly inside the machine.
How do I know if it's the lock assembly or the control board?
Test solenoid resistance first. If you get 30-200 ohms the assembly is probably fine and the board isn't sending voltage. Have someone press Start while you check with a multimeter at the harness connector, you should briefly see 120V AC during the lock attempt. No voltage there means the board's output is dead. But honestly, always replace the lock assembly first. It's $30 and the board is $150-200. In six years of seeing DL calls, I've replaced maybe two boards versus easily fifty lock assemblies.
Can I bypass the door lock to run a load while I wait for the part?
Don't. I know it's tempting with laundry piling up, but bypassing the door interlock means the drum can spin while the door's accessible. If it opens mid-cycle at high RPM you've got a real problem. Use a laundromat for a couple days or hand-wash what you need. The part ships next-day from most appliance suppliers and you'll have it running again before the week's out.
How long does this repair take?
If you've done it once, 30-45 minutes. First time, give yourself an hour. The gasket removal and re-seating takes a little patience, especially getting it back into the clamp band evenly. Everything else is pretty quick, a couple screws and one connector. Unplug the machine, turn off the water supply if you're going to be in there a while, and give yourself room to work in front of the machine.

Related Lg Washer Error Codes

Code: DELG Washer DE Error: Door Not ClosedCode: HUBLG Washer Error Codes: Full ListCode: RESETHow to Reset an LG Washer

Same Fix Works on These Brands

Lg shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience DL Errors

This repair applies to most Lg washers with this error code. Common model numbers include:

WM3700HWA, WM4000HWA, WM5000HVA, WM3900HBA, WM6998HBA, WM8100HVA, WM3470HWA

MS

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on March 13, 2026