How to Fix LG Microwave Error LOC

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⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.

Error Code: LOC Difficulty: Easy

Problem: The control lock (child lock) is active, preventing accidental use.

⚖️ Repair Decision

⚠️ CHECK WARRANTY / AGE

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How to Fix LOC Error (Step-by-Step)

Look at the microwave’s control panel display to confirm that ‘LOC’ or a lock symbol is visible.
Identify the button on the control panel used for the lock function. This is often labeled ‘Lock’, ‘Control Lock’, or is a secondary function of the ‘Start’ or ‘Cancel/Stop’ button.
Press and hold the designated button for 3 to 5 seconds.
Listen for a beep or watch the display. The ‘LOC’ indicator or lock symbol should disappear.
The control panel is now unlocked. You can now use the microwave normally.
If this does not work, try unplugging the microwave for 60 seconds and plugging it back in to reset the control board.
Turn the appliance off, wait about 2 minutes, then turn it back on.

Recommended Parts to Check

Compatibility note: Exact LG microwave part numbers vary by complete model number, production revision, and internal layout. Treat these as diagnostic part-category searches, then confirm fit with the full model number before ordering.

Start here

LG microwave control panel

Common replacement category: Control panel or keypad

Symptom match: Most likely when: LOC stays on, buttons do not unlock, or the lock command will not respond.

Check first: Check first: child-lock procedure, stuck keys, and moisture around the keypad.

Find compatible LG microwave control panel
Also check

LG microwave door switch

Common replacement category: Door switch

Symptom match: Most likely when: LOC appears with door/start interruptions.

Check first: Check first: latch travel and switch continuity with power disconnected.

Find compatible LG microwave door switch
Harness path

LG microwave wire harness

Common replacement category: Control harness

Symptom match: Most likely when: LOC is intermittent or changes after the panel is moved.

Check first: Check first: loose ribbon or harness connectors before replacing controls.

Find compatible LG microwave wire harness
Control path

LG microwave control board

Common replacement category: Electronic control board

Symptom match: Most likely when: keypad and door checks pass but LOC will not clear.

Check first: Check first: connector seating and signs of heat or moisture damage.

Find compatible LG microwave control board

Model-number note: Use the LG microwave model tag before buying; these links are not universal fit claims.

LG Microwave Error LOC Checks Before Replacing Parts

Disconnect power before opening the cabinet, and do not touch high-voltage parts unless you are trained to discharge and test them safely.
Confirm the full LG model number from the tag before matching any replacement category to the appliance.
Check the simple symptom path first: door closure, keypad response, airflow, and any obvious loose or damaged connectors.
Test switches, sensors, or harnesses with a meter where the service data supports it instead of ordering parts by code alone.
If the related parts test correctly, inspect the control area and harness before considering a model-matched control board.

When It’s Better to Replace Than Repair

Microwave repairs require extra caution because high-voltage parts can retain a dangerous charge after unplugging.
Door switches, turntable motors, fuses, and controls may be replaceable, but many microwave failures are safer and cheaper to solve with replacement.
For repair parts or built-in trim kits, verify exact fit with the full microwave model number before buying; these links are general replacement-appliance shopping options.