12501
Moderate
Prusa · FDM 3D Printers
Loadcell Measurement Error - Nozzle Force Sensor Malfunction
Quick Answer
Error code 12501 on your Prusa FDM 3D Printers means: Loadcell Measurement Error - Nozzle Force Sensor Malfunction. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Run the loadcell self-test from LCD > Settings > Loadcell Test
2
Verify the Nextruder cable is securely connected at both ends
3
Update to the latest Prusa firmware as several loadcell improvements have been released
4
If the test fails, recalibrate the loadcell via the calibration wizard in the printer menu
5
Contact Prusa support if the loadcell repeatedly fails calibration, as the Nextruder may need replacement
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement Nextruder assembly (includes loadcell)
Nextruder cable harness
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