LG TV & Audio OLED55B3PUA 55" Class B3 4K OLED Smart TV WIFI MODULE FAIL Error Fix: Wi-Fi Module Failure

Error code WIFI MODULE FAIL on the LG TV & Audio OLED55B3PUA 55" Class B3 4K OLED Smart TV means: Wi-Fi Module Failure. Wi-Fi/Bluetooth module can fail, causing inability to connect to Wi-Fi or Bluetooth devices. Symptoms: no networks detected, immediate connection drops, or "Wi-Fi is turned off" with no option to enable. Module is usually socketed or soldered to main board. Replaceable on some models ($15-40). USB Ethernet adapter provides workaround.

The most successful fix is "Replace Wi-Fi/Bluetooth Module on Main Board" (hard difficulty, ~60 minutes). Estimated DIY cost: $15-$40. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace Wi-Fi/Bluetooth Module on Main Board") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, plastic pry tool, anti-static wrist strap, soldering iron (if needed).

DIY cost: $15-$40. Professional repair typically costs $180-$300. Many homeowners save money by trying the top-ranked community fix first.

The LG TV & Audio OLED55B3PUA 55" Class B3 4K OLED Smart TV has 8 other known error codes, including: ABNORMAL TEMP (OLED Panel Over-Temperature), APP CRASH (App Freezes or Crashes), AUDIO SYNC (Audio Out of Sync with Video), BANDING (Horizontal or Vertical Banding), BLINK 2X (Power Supply Overcurrent / Short), and 3 more.

Error code WIFI MODULE FAIL also appears on 6 other LG TV & Audio models: 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV, 75NANO75UQA 75" Class NanoCell 75 Series 4K Smart TV, 86QNED80URA 86" Class QNED80 4K QNED MiniLED Smart TV, OLED65C3PUA 65" Class C3 4K OLED evo Smart TV, OLED65C4PUA 65" Class C4 4K OLED evo Smart TV, OLED65G3PUA 65" Class G3 4K OLED evo Gallery Edition Smart TV. The fix may vary by model, so check each model's specific page for tailored repair steps.