On the Original Prusa XL, the I2C bus is used for the XLBuddy to communicate with other printer components. If there is an error while the XLBuddy is receiving data, the printer will show the message "HAL detected an I2C error when receiving data via I2C."
Error name: I2C Receive failed
Error code: #17315
Restarting the printer is expected to resolve the error, and this is not expected to occur again. In case a restart does not resolve it, please contact our customer support, we will take it from here.