What DOOR means (lg door error)
An lg door error on an LG microwave is a “DOOR” prompt telling you the door is not latched, not a breakdown. The microwave will not run until the interlock switches confirm the door is closed, which is a safety feature. It clears as soon as the door is closed firmly and latches.
Symptoms to look for
The signs below help confirm you are dealing with this condition rather than a different fault on your LG Microwave. You may see one of them or several together, and they can build up gradually or appear suddenly after a power event, a long door opening, or recent service.
- “DOOR” shows and the microwave will not start
- The door does not close or latch cleanly
- The prompt clears when the door is pushed firmly shut
- Laundry-style obstruction or debris on the latch
Common causes
Several different faults can produce these symptoms. Working through the most likely causes in order helps separate a quick, owner-level check from a problem that needs trained service and the correct LG parts.
- Door not fully closed — it was not pushed firmly shut
- Obstruction on the latch — debris stops a clean latch
- Misaligned or worn latch — the hooks do not engage
- Interlock switch fault — a switch does not confirm the closed door
Troubleshooting steps you can try
Work through these checks in order before calling for service. Stop wherever you are unsure, or where high-voltage parts, gas, the sealed refrigeration system, or a heat-pump compressor are involved, and hand the rest to a qualified technician.
- Close the door firmly until it latches and confirm the prompt clears.
- Check the latch hooks and door edge for debris or damage.
- Unplug the microwave for a minute, then retry if the prompt stays.
- If “DOOR” stays with the door clearly shut, leave it for service.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the door latch, door interlock switches, and door assembly. The correct part for your LG Microwave is matched from the model and serial number, and genuine LG components are fitted rather than generic substitutes so that performance, safety, and the appliance’s long working life are all protected. Confirming the failed part before ordering avoids replacing more than the fault actually requires.
When to call a technician
A DOOR prompt that stays with the door fully closed needs a technician to test the interlock switches and latch. When the fix calls for trained service, book a visit through our scheduling page and an experienced, qualified technician will diagnose and repair it. For manufacturer documentation and model lookup, see the manufacturer at lg.com/us.
Prevention and care
Regular care keeps this condition from returning on your LG Microwave. Keep filters, vents, and the condenser or exhaust path clean, avoid overloading or blocking airflow, check that doors and seals close cleanly, and follow the LG maintenance guidance for your model. Because this is a mode, lock, or reminder rather than a breakdown, the best prevention is simply learning the control sequence for your model so you can turn it on and off deliberately. Keep the control panel clean and dry so a touch lock or reminder is easy to read and clear.
Related help and LG resources
Browse other LG Microwave diagnostics, read about professional LG Microwave repair, look up your unit in the LG models reference, or the related LOC child lock status, or schedule a service visit. For LG manufacturer documentation and model lookup, visit the manufacturer at lg.com/us.
