Can be an emergency: see the read below

Error code on an LG microwave — is it urgent?

Codes usually indicate a sensor fault, a door fault, or a control-board issue. Photograph the display with the code showing before anyone clears it, then switch the microwave off and on once. When the code comes back, leave it off: the technician reads the code from the panel. Codes that name a leak, a heating circuit, a flame or an ignition fault, and any code with a smell or water on the floor, move this up; the Triage Profile reads the panel and everything else in the photo.

Show us the microwave.

Snap a photo — see what it is, how urgent, who to call. One photo of the problem. fixRAgent reads it and gives you a Triage Profile.

Phone photo inside a microwave with a black burn mark on the side wall
EMERGENCY3 of 3 reads agreed
Over-the-range microwave
Call an appliance technician
A real Triage Profile from this photo, read by fixRAgent on 9 Oct 2026. Open it ›

Or start with a sentence

In the next five minutes

Safe first steps, before the call. Nothing here needs a tool.

  1. Take a photo of the code on the display, then stop the microwave and switch off its breaker, or unplug it if the plug is dry and easy to reach.

  2. If you can read its label without moving it, note the brand and model number for the call.

  3. Don’t use it again until it’s checked, and keep people away from it.

Everything else about this problem

Is it an emergency?

Is an LG microwave error code an emergency?

Usually not, but it can be — the code is the appliance reporting a fault it detected. Note the code. Because this can be an emergency, leave it off and get it checked; don't reset it or turn it back on. If the code returns with a burning smell, smoke or a leak, leave it off and call a pro.

If you manage this unit

Ask the resident

  • Which letters and numbers are on the display?
  • Does the code come back after one restart, and is there anything else: a smell, water, a noise?

Say this to your resident

Thanks for telling me about the code on the microwave. Please take a photo of the display with the code showing before you clear it, then switch it off and on once. If the code comes back, leave it off: the technician reads the code from the panel. Send me the photo and I'll get an appliance technician to read it.

Who to call

An appliance technician The photo of the display shows the technician the code as it was.

Symptoms & causes

Codes usually indicate a sensor fault, a door fault, or a control-board issue.

Your LG microwave's display is flashing an error code, indicating an internal fault preventing normal operation. This often points to issues like a malfunctioning control board, a faulty door interlock switch, or a problem with the humidity or temperature sensors. Less commonly, it could be a simple power fluctuation or a temporary software glitch that can be resolved with a reset.

Questions people ask

Who do I call about an error code on a microwave?

An appliance technician. Codes usually indicate a sensor fault, a door fault, or a control-board issue. The code is the technician's starting point, and the photo of the display shows it to them as it was. The Triage Profile names who to call for your photo.

What do I tell the resident right now?

Thanks for telling me about the code on the microwave. Please take a photo of the display with the code showing before you clear it, then switch it off and on once. If the code comes back, leave it off: the technician reads the code from the panel. Send me the photo and I'll get an appliance technician to read it.

What is the first step to fix a flashing error code on my LG microwave?

This can clear temporary glitches or power fluctuations that might be causing the error code.

Can a faulty door switch cause an error code on an LG microwave?

Yes, a malfunctioning door interlock switch is a common culprit for various error codes on LG microwaves.

How do I find out what a specific LG error code means?

The manual provides a detailed list of error codes and their corresponding troubleshooting steps.

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