LG oven error code F10: A troubleshooting guide

Encountering error codes on an oven, particularly when you’re in the middle of preparing meals, is often a frustrating and confusing experience. Error codes are designed to indicate issues or malfunctions within the oven. By doing this, they can help you determine what needs attention and/or replacing.

If you have an LG oven, you might encounter the F10 error message. This code usually means the door lock has failed while the lock motor is operating. Let’s unpack the causes behind this message and how you can resolve it.

IMPORTANT: Never try to continue or restart a self-cleaning cycle if any error codes are displaying on your oven.

Disclaimer: The error code information provided in this article is based on general service manuals and may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate information, we strongly recommend consulting the technical sheet for your specific appliance model.

Possible culprits

Door latch assembly

The door latch assembly usually has a hook to hold the oven door closed, a motor or lever to operate the latch and a switch that tells the oven control board if it’s latched or unlatched. Most door latch assemblies are found at the top of the door, underneath the cooktop/stove section.

The door latch assembly could be bent or it could have a faulty motor or switch. If something is bent, it could be preventing the latch from working correctly, which could cause an F10 error.

Door lock switch

The door lock switch is an important electrical safety feature that tells the control board if the door is locked or unlocked.

If the door lock switch fails to engage or is malfunctioning, it can trigger the F10 error and prevent the cleaning cycle from starting.

Door latch/lock motor

The door lock motor (also known as a door latch motor) is responsible for physically locking the oven door during the self-clean cycle. If the motor is faulty or experiencing issues, it may fail to engage, which can trigger the F10 error.

Wiring issues like fraying or loose connections from the door lock motor switch to the main control board could also result in F10 errors.

Main control board

The main control board controls all of the functions of the oven. If the control board is faulty or there are loose or bad connections on it, that can cause the F10 error.

Troubleshooting steps

What you need

• Phillips and flat-head screwdrivers – To remove panels and access various parts of the oven.
• Multimeter – For measuring electrical continuity and resistance. Use it to test components such as the door lock motor and check wiring continuity.
• Safety gloves – To protect your hands, especially when dealing with sharp edges.
• Flashlight – To help you inspect wiring and connections inside the dark oven cavity.
• Small container – To keep track of screws and other small parts.
• Cleaning supplies – To clean parts of any buildup or debris.

Read more: How To Use A Multimeter To Check Appliance Parts

Check the door latch assembly

Visually inspect the assembly, especially the hook, to see if anything is bent. You can try to straighten it out with needle-nose pliers, but if it’s bent too much, you’ll need to replace it.

Check the door lock switch

Follow these steps to access, test, and replace a faulty door lock switch:

1. Turn off the oven breaker and unplug it to keep yourself safe.
2. Use a screwdriver to remove any screws to access the back of the control panel.
3. Find the door lock switch. It’s typically on the same bracket as the motor. On most LG models, the door lock switch will be located in the back of the range behind the rear panel and will have a rod with a latch at the end of it. On some models, the switch may be found at the front, in which case you’d need to remove the main top to access it.
4. situated near the oven door, connected to the locking mechanism. Check the switch for any visible signs of damage.
5. Set your multimeter to check for continuity (looks like a sideways wifi symbol) to determine if the switch is carrying an electrical current.
6. The switch on the latch usually has two wires on it. Take note of the wire placements before you carefully disconnect the wires attached to the door lock switch.
7. Place the multimeter probes on the terminals of the door lock switch and push the button in. If you get continuity when the button isn’t pressed in during testing, you might need to replace the switch. In some cases, the switch may show continuity without pushing the button in and show no continuity while it’s pushed in. Check your oven’s tech sheet to verify which case applies to your model.
8. If you need to replace the switch, while the oven is unplugged, disconnect the wires from the faulty door lock switch and remove it from its position.
9. Securely attach the wires to the corresponding terminals on the new door lock switch.
10. Reinstall any panels or screws that were removed to access the switch.
11. Plug in the oven, turn it on, and run a short test cycle, including a short self-clean cycle to see if the error returns.

Check the switch wiring

If the switch tests good, you’ll need to check the wiring.

1. Carefully examine the wiring connections on the door lock motor switch. Look for any signs of fraying, loose connections, or damage.
2. Make sure all wires are securely connected to the designated terminals on the door lock motor switch.
3. Reconnect any loose wires.

Test for continuity

1. Check the wires for fraying or other damage. If you find any damage, you’ll need to replace the wiring harness with a compatible OEM one.
2. If the wires look OK, set your multimeter to measure continuity (looks like a sideways wifi symbol).
3. Use the multimeter probes to test the continuity between the wiring connections on the door lock motor switch to the control board. A lack of continuity may indicate a wiring issue.
4. Carefully reassemble any panels or covers that were removed.
5. Plug in the oven and turn it on.
6. Run a test cycle, including the self-clean function. See if the F10 error code disappears.

Check the main control board

If there are no problems with the switch and wiring harness after testing, you may need to test and possibly replace the main control board as a last resort.

Here’s how to access, inspect, and address problems related to the control board:

1. Make sure the oven is turned off and unplugged.
2. Find the control board. It’s typically found behind the control panel or back panel. Most models have a display board and a main board, and the main board may be located in different locations.
3. Use a screwdriver to remove the cover and access the main board. Depending on your oven model, there may be screws or clips securing the control panel cover.
4. Carefully examine the connections on the board for any signs of looseness, corrosion, or damage. Look for disconnected wires or burnt areas. If any areas are burned or damaged, replace the board.
5. Use a soft brush or compressed air to clean any areas affected by corrosion, if it’s present.
6. Gently re-seat and tighten any loose connections if you find any. Be very careful to avoid damaging the connectors or the board.
7. If you don’t find any other issues, swap out the control board.

Read more: The Pros And Cons Of Self Cleaning Ovens – AppliancePartsPros Blog

Additional information

Thanks for reading! We hope this information helped you troubleshoot the F10 error code on your LG oven.

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