I don't have a PS5, so I chatted with Gemini and ChatGPT about the error code. They both knew the error code and gave similar answers.
An error "CE-107891-6" on PS5, it usually means the game or update didn’t install properly. This often happens due to an interrupted download, power loss, corrupted data, or issues copying from external storage.
1. Delete and Reinstall the Game (This should fix it in most cases. If not, please proceed to step 2.)
• Go to Home Screen
• Highlight the game
• Press Options → Delete
• Reinstall it from Library
2. Fully Power Cycle the PS5
• Turn the console completely off (not Rest Mode)
• Wait 1–2 minutes
• Turn it back on
3. Check for System Software Updates
• Settings → System → System Software → Update
4. Rebuild Database (if it still happens)
• Turn off the PS5
• Hold the power button until you hear the second beep
• Connect controller via USB
• Choose “Rebuild Database”
This won’t delete your games — it just cleans up system data. If the issue started after moving a game from an external drive, try reinstalling it directly to the internal SSD instead.
In most cases, a clean reinstall resolves CE-107891-6.