LG Washer dE4 Error — Door Detection Variant Fix

What it means

LG washer dE4 error is a door-error variant LG uses on certain WashTower and newer front-load models — alongside dE, dE1, and dE2.
It points at the same family of problems: the door, the interlock, or the wiring between them.

Affected Models

LG Front Load Washer
LG Top Load Washer
LG WashTower (combined washer + dryer)
LG TurboWash Washer
LG TwinWash Washer

Common Causes

Door not fully closed — partial latch engagement
Door interlock solenoid faulty
Door switch (sensor) failing
Wiring loose at the door switch connector
Control board not receiving door status signal

How to Fix It

Close the door firmly.

Push the door shut with deliberate force until you feel and hear a clear click.
Half-closed doors are the most common dE4 trigger.
Check the seal for trapped items.

Inspect the rubber gasket all the way around for trapped clothing.
Even a small piece of underwear or sock in the seal can prevent the latch engaging.
Power-cycle the washer.

Unplug for 60 seconds, plug back in.
One-off door-switch glitches sometimes clear with a clean reboot.
Replace door switch / interlock (technician).

If dE4 persists after the basics, the door switch or interlock has failed.
Both are straightforward parts to replace but need the front of the washer opened up — typically a 30-minute job for a technician.

When to Call a Professional

dE4 needs the same diagnostic path as dE / dE1 / dE2 — start with the door and seal, then suspect the interlock.
If reseating doesn't help, technician replacement of the door switch or interlock is needed.

Frequently Asked Questions

Is LG dE4 the same as dE, dE1, or dE2?

Same family — all are door-related errors, but for slightly different conditions.
dE is the general door error; dE1 is door open and not locked; dE2 is door closed but not locking; dE4 appears on newer models for specific lock detection failures.
Diagnosis steps are the same: door close, seal, latch hook, interlock — in that order.