What happened?
This warning appears when the printer is unable to complete the bed leveling (mesh bed probing) process. The printer shows the message "Bed leveling failed. Try again?".
This may happen due to loadcell or PINDA probe detection issues, mechanical interference, a dirty nozzle, or incorrect assembly. It prevents the print from starting, as proper bed leveling is critical for first-layer adhesion and successful prints.
Error name: Probing failed
Error code: #31833 (CORE One) #17833 (XL) #26833 (MK4S) #13833 (MK4) #27833 (MK3.9S) #21833 (MK3.9) #28833 (MK3.5S) #23833 (MK3.5) #12833 (MINI)
How to fix it?
- Check that the nozzle and bed are clean, and remove any filament residue that may interfere with probing.
- Ensure the steel sheet is properly seated and flat on the bed surface.
- Verify that the nozzle is not obstructed or loose.
- If you're using custom start G-code, ensure it doesn't override or interfere with the firmware’s bed probing sequence.
If the issue continues:
- Run all the tests from LCD Menu -> Control -> Calibrations & tests, to check all the probe and axes functions.
- If your printer is equipped with a loadcell, inspect the loadcell wiring and mounting for damage, looseness, or misalignment. More info in the dedicated Loadcell troubleshooting [進行中の翻訳] article
- If your printer is equipped with a SuperPINDA probe, troubleshooting using the dedicated articles:
If probing still fails after these steps, do not hesitate to contact our Support for assistance.
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