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LG microwave LOC error code

Microwave

Reviewed August 2025 · sources below

LG microwave LOC (or Loc) means Control Lock is enabled — the keypad is disabled so buttons cannot be pressed accidentally. This is not a failure code. On LMV2031 and similar over-the-range models, hold the Clear or Stop pad for three seconds until LOC disappears from the display.

Safe to keep using?

No safety issue

This is a status or lock code, not a hardware fault.

DIY Difficulty
1 /10EASY

This is a status or lock code, not a repair.

Time: About 3 seconds
Risk: Low
Skill: Anyone
Tools:

Likely causes

Most likelyChild lock enabled

Child lock is enabled — the control pad is locked.

Check: Hold Child Lock or Control Lock for about 3 seconds until the code clears.

Est. cost: $0–$0

PossibleStuck or wet control key

Moisture or a stuck membrane key can mimic a lock even after you clear the display.

Check: Dry the panel, press each key once, then power-cycle the appliance for 5 minutes.

Est. cost: $0–$0

Repair or Replace?

DIY repair

$0–$0

Professional repair

$0–$0

Comparable replacement

$638–$862

Our recommendation

REPAIR LIKELY MAKES SENSE

REPAIR LIKELY MAKES SENSE. Professional repair ($0–$0) is well below replacement cost.

Actual repair and replacement costs vary by model, location, labor rate, and condition.

What it means

Child lock is enabled — the control pad is locked.

How to fix it

  1. Look for LOC or a lock icon on the display — if present, the lock is active.
  2. Press and hold Clear/Stop (or the pad labeled Lock) for 3 seconds until LOC clears.
  3. If LOC will not clear, unplug the microwave for 5 minutes and retry the hold sequence.
  4. Check whether a child-lock setting was enabled in the options menu — some models hide lock under Settings.
  5. If every pad is dead with no LOC showing, the membrane keypad may have failed — that is a different fault from LOC.

Call a pro when: Call a technician if the keypad stays dead after LOC clears or you smell burning from the control area.

Repair videos

Watch repair videos on YouTube

User manuals
Start with the official support page, then use the search options if that link has moved. You’ll usually need your model number.
OfficialLG product manuals

Enter your model number to download LG manuals and docs.

Manual librarySearch LG Microwave manuals on ManualsLib

Free scanned manuals — search results, not a guaranteed match.

Web searchSearch the web for LG Microwave user manual

Useful when manufacturer pages move or don’t list older models.

FAQ

What does LOC mean on LG microwave?

LOC is Control Lock — a user setting that disables the keypad.

How do I turn off LG microwave LOC?

Hold Clear/Stop for about 3 seconds until the lock icon disappears.

Do I need a part for LOC?

No — LOC is cleared from the keypad, not by replacing parts.

Why did LOC turn on by itself?

It is usually pressed accidentally during cleaning or by a child leaning on the pad.

LG LOC on specific models

LMV2031ST LOC

Other LG Microwave codes

LG DOORLG E10LG F1MLG F2MLG F4LG F5

Prevent this problem next time

  • Use lock features only when needed
  • Avoid cutting power mid-cycle

Sources

Manufacturer meaning

Child lock is enabled — the control pad is locked.

FixApplianceCode guidance

Turn child lock off on the LG microwave. No replacement part is needed.

Source type: Editorial

Source: FixApplianceCode status-code guidance

Last reviewed: 2026-08-24

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