- Appliances
- Ovens
Loc
LG oven code Loc: control lockout or door lock active
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
The Loc message on an LG oven or range display means either the Lockout feature is activated or the oven door is locked because the temperature inside the oven is too high after a Self Clean cycle. Wait up to 1 hour for the oven to cool down, and press and hold Clock for 3 seconds to unlock.
Safety first
Stop and check this first
- Never attempt to open or force the oven door open when Lock or the lock icon is displayed, as forcing the door open will damage the automatic door locking system and the cavity reaches extreme temperatures during self-cleaning.
Safe checks you can perform
- Wait up to 1 hour for the oven to cool down after a Self Clean cycle
- Set the oven mode knob to Off and hold Clock for 3 seconds
- Turn the range off and disconnect the power supply if the lock malfunctions
Leave these tasks to a qualified professional
- Do not attempt this professional task: Repair using LG-authorized components and verify lock and unlock operation
- Do not attempt this professional task: Diagnose the Lockout and self-cleaning lock issue with a qualified technician
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Repair using LG-authorized components and verify lock and unlock operation
What they doThe qualified technician completes the repair using only LG-authorized replacement components and tests the range afterward to confirm that the 3-second Clock Lockout function and door lock engage and release properly.
They must show younormal locking and unlocking of the oven door and controls after the repair.
In writingitemized LG-authorized replacement parts on the invoice and post-repair test results.
Diagnose the Lockout and self-cleaning lock issue with a qualified technician
What they doWhen the Loc message will not clear by holding Clock for 3 seconds with the mode knob at Off on a cool oven, or if the self-cleaning mode malfunctions, a qualified LG technician inspects the appliance with the power supply disconnected.
They must show youthe recorded Loc condition and the inspection findings for the door and control lock.
In writingverified Loc status, conditions found on the range, and diagnostic findings on the service order.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Wait up to 1 hour for the oven to cool down after a Self Clean cycle
- Who:
- user
- How:
- If the oven was running or just completed a Self Clean cycle, or if you pressed Clear/Off to cancel it, do not try to force the oven door open: allow up to 1 hour for the oven to cool down to a safe temperature.
- Result that matters:
- Once the oven has cooled to a safe temperature, the automatic door lock releases and the door opens normally.
- If The door was locked because the temperature inside the oven was still too high after Self Clean.
- If If the oven is already cool and the Loc message still appears when you want to cook, proceed to deactivate Lockout.
- Evidence to keep:
- Cooling time of up to 1 hour after Self Clean and release of the automatic door lock.
Evidence: LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
Set the oven mode knob to Off and hold Clock for 3 seconds
- Who:
- user
- How:
- Make sure the oven mode knob is in the Off position, then press and hold the Clock button (or Probe/Clock as indicated on the panel) for 3 seconds to deactivate the Lockout feature.
- Result that matters:
- The unlock melody sounds, Loc appears briefly until the door and controls unlock, and the lock icon turns off.
- If Lockout is now deactivated (note that on model LSG4511 without self-clean, Lockout locks the controls but does not lock the oven door).
- If If the self-cleaning mode or door lock malfunctions and will not release on a cool oven, proceed to shut off power safely.
- Evidence to keep:
- Unlock melody and clearance of the Loc display after holding Clock for 3 seconds with the knob at Off.
Evidence: LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
Turn the range off and disconnect the power supply if the lock malfunctions
- Who:
- user
- How:
- Never force the oven door open (forcing the door will damage the automatic door locking system); if the self-cleaning mode or lock malfunctions, turn the range off, disconnect the power supply, and arrange service with a qualified technician.
- Result that matters:
- The range is safely de-energized without damaging the oven door or automatic locking system.
- If If restoring power on a cool oven and holding Clock for 3 seconds unlocks the controls cleanly, monitor normal operation.
- If If the door or controls remain locked on a cold oven, leave the range off and have it serviced by a qualified LG technician.
- Evidence to keep:
- Status of the Loc message and door lock with the oven cool and the mode knob set to Off.
Evidence: LG Range - Error Codes List · LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- LG
- Product type
- Ovens
Known code variants
- Bloqueo
- bloqueo puerta horno LG Loc
- cocina LG muestra Loc
- horno LG Loc
- LG Loc
- LG oven door locked Loc
- LG oven Loc
- LG range Loc message
- LOC
- Lock
- Lockout
What it means
On LG ovens and ranges (such as the LSG4513 and LSG4511 models), the Loc message appears in the display when you want to cook for two reasons documented in the owner's manual: either the Lockout feature is activated, which prevents most oven controls from being turned on and automatically locks the oven door on self-cleaning models like the LSG4513 (on the LSG4511 without self-clean, Lockout locks the controls but not the door), or the oven door is locked because the temperature inside the oven is too high during or after a Self Clean cycle. Never attempt to force the oven door open when Lock or the lock icon is displayed.
Warnings and stop conditions
- Highsource verified
Never attempt to open or force the oven door open when Lock or the lock icon is displayed, as forcing the door open will damage the automatic door locking system and the cavity reaches extreme temperatures during self-cleaning.
Evidence: LG Range - Error Codes List · LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
Symptoms and causes
Probable causes · in order
- Lockout feature activated on the oven control panelCommon
Pressing and holding the Clock button for 3 seconds with the oven mode knob in the Off position activates Lockout, preventing most oven controls from turning on (except the timer and oven light) and showing Loc.
Evidence: LG Range - Error Codes List · LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
- Oven door locked because internal temperature is too high after Self CleanCommon
During a Self Clean cycle and after it finishes or is canceled with Clear/Off, the oven door remains locked until the cavity cools down to a safe temperature, which takes up to 1 hour.
Evidence: LG Range - Error Codes List · LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
- Malfunction of the self-cleaning mode or automatic door locking systemLess common
If the self-cleaning mode or automatic door locking system malfunctions and will not release once cool, the LG manual instructs turning the range off, disconnecting the power supply, and having it serviced by a qualified technician.
Evidence: LG Range - Error Codes List · LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
Virtual technician
Does Loc still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
LG · 2026 · official_doc
- 2
LG Manual del propietario cocina a gas LSG4513 / LSG4511 (MFL68920504_05)
LG Electronics · 2016 · manual
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