LG TV Error Code 301: How to Fix It

Easy 15-30 minutes Medium Severity Verified June 2026
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Error Code
301
Brand
LG TV
Product Type
smart_tv
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-30 minutes
LG TV Error Code 301 indicates a synchronization failure between your LG TV and the LG ThinQ app, meaning the two devices are unable to communicate or pair properly. This is typically caused by a network connectivity problem, outdated firmware, a corrupted app cache, or an account authentication issue. In most cases, you can resolve this error at home without any special tools or professional help.
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Tools You'll Need

How to Fix Error Code 301

  1. Restart Your LG TV and Router

  2. Check Your Wi-Fi Connection on the TV

  3. Update Your LG TV Firmware

    Do NOT unplug or turn off your TV during a firmware update. Interrupting an update can corrupt the TV's software and may require a factory reset or professional repair.

  4. Clear the LG ThinQ App Cache on Your Phone

    Clearing app data will log you out of the LG ThinQ app. Have your LG account email and password ready before doing this step.

  5. Sign Out and Back Into Your LG Account

  6. Ensure Both Devices Are on the Same Network

  7. Perform a Network Reset on the TV

    A full factory reset will erase all installed apps, settings, and account information on your TV. Only use this option as a last resort.
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When to Call a Professional

If you have completed all steps above — including the network reset — and Error Code 301 still appears, the issue may be related to a hardware defect in the TV's Wi-Fi module or a deeper firmware corruption. Contact LG Support at 1-800-243-0000 or visit LG's official support page to arrange a warranty repair or in-home service visit. If your TV is still under warranty, do not attempt any internal repairs yourself, as this may void coverage. A certified LG technician can run advanced diagnostics and replace the wireless communication module if necessary.

Frequently Asked Questions

What does LG TV Error Code 301 mean?
Error Code 301 on an LG TV signals a sync or communication failure between your TV and the LG ThinQ app. It usually means the TV and the app cannot connect over your network, often due to a Wi-Fi issue, outdated software, or an account authentication problem.
Why does my LG ThinQ app keep showing Error 301 even after restarting?
If restarting does not fix Error 301, the most likely causes are a corrupted app cache on your phone, both devices being on different Wi-Fi networks (e.g., 2.4 GHz vs 5 GHz), or an expired LG account session. Try clearing the ThinQ app cache, ensuring both devices are on the same network, and signing back into your LG account.
Do I need to factory reset my LG TV to fix Error Code 301?
A factory reset is not usually necessary to fix Error 301. In most cases, restarting the TV and router, updating firmware, clearing the ThinQ app cache, and re-signing into your LG account will resolve the issue. Only consider a factory reset if all other steps have failed.
Can Error Code 301 mean my LG TV's Wi-Fi module is broken?
In rare cases, yes. If the TV cannot connect to any Wi-Fi network at all — not just the ThinQ app — and a network reset does not help, the internal Wi-Fi module may be faulty. This would require professional repair or replacement by an LG-authorized technician.
Does LG TV Error 301 affect streaming apps like Netflix or YouTube?
Error Code 301 is specific to the LG ThinQ app sync function and does not directly affect streaming apps like Netflix, YouTube, or Disney+. If your streaming apps are also not working, the issue is likely a broader network problem with your TV or internet connection rather than the ThinQ sync error specifically.

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