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Appliance Fix Guide

LG Microwave error code

LG Microwave Error DOOR

LG microwave code DOOR indicates the microwave door is not closed properly. Audited diagnosis findings: door is not properly closed; food debris obstructing the latch; faulty door switch.

LG microwave code DOOR indicates the microwave door is not closed properly. Audited diagnosis findings: door is not properly closed; food debris obstructing the latch; faulty door switch.

Updated Aug 18, 2026
✅ WORTH FIXINGParts under $100
LG microwave repair guide for error DOOR
Error codeDOORMicrowave

Try these first

Start here before buying a part or taking the appliance apart.

  1. 1
    Step 1

    Ensure the microwave door is completely closed.

  2. 2
    Step 2

    Check for any food particles or obstructions around the door latch and hinges.

  3. 3
    Step 3

    Clean the door and the area around the latch.

A quick explanation

What does DOOR mean?

LG microwave code DOOR indicates the microwave door is not closed properly. Audited diagnosis findings: door is not properly closed; food debris obstructing the latch; faulty door switch.

The answer you came for

How to fix LG microwave error DOOR

Start with the safest checks and work from simple to technical.

Microwave internal components can retain hazardous voltage even after unplugging. The steps below are limited to safe external checks. Internal diagnosis and repair should be handled by a qualified professional.

  1. 1

    Step 1

    Ensure the microwave door is completely closed.

  2. 2

    Step 2

    Check for any food particles or obstructions around the door latch and hinges.

  3. 3

    Step 3

    Clean the door and the area around the latch.

  4. 4

    Step 4

    Open and close the door firmly a few times to see if the error clears.

  5. 5

    Stop and arrange professional service

    If the error code returns after a full power reset, stop DIY internal work. Microwave internal components can retain hazardous voltage even after unplugging. Internal diagnosis and repair should be handled by a qualified technician.

    What you should see: You avoid opening the cabinet or touching internal high-voltage parts.
If the code comes back

Do not keep replacing parts based only on the code. Repeat the safe checks above. If the fault remains, stop and arrange qualified service rather than ordering from the code alone.

What may be causing it?

  • Door is not properly closed
  • Food debris obstructing the latch
  • Faulty door switch
  • Damaged door latch assembly

These are possibilities to investigate, not proof that one part has failed.

Recommended part

Possible technician-diagnosed component

Door Switch

Price noted in the current guide: $15-$40

Why this part is shown: A technician may identify Door Switch on some LG microwave models after diagnosis. This is not a DIY installation guide.

Do not open the microwave cabinet or attempt internal replacement. Confirm model compatibility with a qualified technician before any purchase.

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Replacement options

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If repairing this microwave no longer feels worthwhile, compare three replacement paths below.

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Make the money decision

Repair or replace calculator

Use the age and total repair estimate to get a simple comparison. This is guidance, not a guarantee.

Safety first

Unplug the microwave before any checks. Do not remove the cabinet or touch internal components.

When to stop
  • Microwave internal components can retain hazardous voltage even after unplugging. Internal diagnosis and repair require a qualified technician.

Free quick sheet

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Reviewed by the Appliance Fix Guide Editorial Team

Last reviewed and updated Jul 2, 2026 · Educational repair guidance, not a professional diagnosis

  • Researched against manufacturer documentation and service literature where available.
  • Safety-first structure: every guide starts with the safest first action and states when to stop and call a professional.
  • Part compatibility is treated cautiously: fitment must be confirmed against the exact model number before purchase.