Ultimaker_user_helps

Found this support article. https://support.ultimaker.com/hc/en-us/articles/360011576000-ER45-Capacitive-sensor-low-performance-or-interference-detected If the printer reports "interference on the signal" consistently and you encounter frequent issues with active leveling, please contact support. If you require further support, please contact us by submitting a ticket. Please ensure to include the error number (ERXX) and your printer's log files.

I recommend submitting a ticket request to Ultimaker support https://support.ultimaker.com/hc/en-us/requests/new for more information on the availability of the spare parts.

I think you can try checking the pully ensure is properly secure to the axles rod. https://support.ultimaker.com/hc/en-us/articles/360011490220-Check-for-play-on-the-axles-of-the-Ultimaker-3 https://support.ultimaker.com/hc/en-us/articles/360017142879-How-to-align-the-axles-on-your-Ultimaker-printer