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LG DE on a washer dryer

Door fault — the machine cannot confirm the door is closed and locked.

Verdict

You can fix this yourself

No special tools or qualifications needed

Urgency
Not urgent

About 55 min to work through

Typical cost

Free to £130

DIY: Up to £40 in parts

What DE actually means

The interlock never reported back that the door was latched, so the machine refuses to start. Laundry trapped in the seal accounts for most cases; a worn catch or a failed interlock accounts for the rest.

What causes it, most likely first

  1. Laundry caught in the seal

    Most likely

    A trapped corner of fabric holds the door fractionally proud so the latch misses its catch.

    How to check: Open the door and run a hand right round the seal.

  2. Door not pushed firmly enough

    Common

    The door needs a positive push until it clicks; easing it shut leaves the latch un-engaged.

  3. Worn catch or sagging hinge

    Common

    The hook wears or the door drops so it no longer enters the lock squarely.

  4. Failed door interlock

    Occasional

    The door latches mechanically but the contacts no longer signal the board.

    Door interlock£15–£40 for the partDIY with care

How to fix it, step by step

  1. Clear the seal and close firmly

    Run a hand round the seal, remove anything caught, push until it clicks.

    2 min

  2. Power-cycle

    Switch off at the wall for a minute and restore power.

    3 min

  3. Inspect the catch and hinge

    Check the hook for wear and cracks, and watch whether the door drops as it swings.

    5 minTorch

  4. Replace the interlock if it persists

    A cheap part behind the door seal band — a short engineer visit if you would rather not open the machine.

    45 min

Need an engineer for this DE?

We list 4 washer dryer repair businesses across the UK, 2 of which are LG-authorised. Diagnostic callouts typically start around £55, and many will put that towards the repair if you go ahead.

Find washer dryer engineers near you

Parts you might need

Typical UK prices for the part alone, before fitting. Worth knowing before you accept a quote — the part is often a small share of what a repair is priced at.

  • Door interlock

    The electrically operated latch that proves the door is shut before the machine will fill, and holds it shut until the drum stops.

    £15–£40

Related problems

Other LG washer dryers codes

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