LG TV & Audio OLED65C4PUA 65" Class C4 4K OLED evo Smart TV ERROR 501 Error Fix: App Install Failed

Error code ERROR 501 on the LG TV & Audio OLED65C4PUA 65" Class C4 4K OLED evo Smart TV means: App Install Failed. An app failed to install from the LG Content Store. Insufficient storage space, corrupted download, or server-side issue. Clear LG Content Store cache and retry. Ensure sufficient free storage. Check network connection stability.

The most successful fix is "Free Up Storage and Reinstall App with Firmware Update" (medium difficulty, ~30 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

This error is rated low severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Free Up Storage and Reinstall App with Firmware Update") is rated medium difficulty and takes about 30 minutes. Tools needed: LG TV remote.

DIY cost: $0. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The LG TV & Audio OLED65C4PUA 65" Class C4 4K OLED evo 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 ERROR 501 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, OLED55B3PUA 55" Class B3 4K OLED Smart TV, OLED65C3PUA 65" Class C3 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.