For anyone who has problems calibrating the fingerprint sensor, I happened to find a pretty good solution. The only problem is that you need another Android device like a tablet or phone.

1. Go to https://pixelrepair.withgoogle.com/carri... on the working Android device

2. Follow the instructions until you are in fastboot mode on the repaired device

3. Do not select the rescue mode!!!!

4. Simply connect your repaired phone to the working Android device via USB

5. Press "Connection" on the working device and follow the instructions.

Once you have selected your repaired device, everything will go very quickly until your repaired phone reboots and your fingerprint sensor can be used again.

I already tried this with the rescue mode, but the fingerprint error was still not fixed. I accidentally connected my phone without selecting rescue mode and everything went pretty quickly to success.

Translated with DeepL.com (free version)