Homing or a sensor fails (endstop, levelling)
14 usi3d guides for “Homing or a sensor fails (endstop, levelling)”, each with the likely causes, how to check which one is yours and the step-by-step fix, with each manufacturer's official sources.
One applies to any FDM printer and 13 are for Anycubic, Bambu Lab, Creality, Elegoo, Prusa, Qidi, Snapmaker, Sovol and Voron printers.
Each guide summarises the official documentation and says whether usi3d has already verified it on a machine.
Any FDM printer (1 guide)
- Homing or the leveling probe fails (endstop, BLTouch/CRTouch, inductive or load cell)
When homing, an axis keeps pushing against the end, stops too early, or the printer shows a homing or bed probing error.
Anycubic (1 guide)
- Kobra S1 or Kobra 3: errors 10237 (auto levelling), 10108 (nozzle scraping the bed) or 10130 (Z homing)
The Kobra S1 or Kobra 3 stops with «CODE: 10237 Auto leveling error.
Bambu Lab (2 guides)
- A1 and A1 mini: Z homing or bed levelling fails (hotend eddy current sensor)
The A1 or A1 mini reports «Z homing failed» or levelling fails: the toolhead comes down a little and stops without touching the bed, drops quickly and goes back up, taps…
- X1 and P1: homing or bed levelling fails (Z homing failed, plate not placed properly, force sensors)
While preparing a print, the X1 or P1 stops with «Z-axis homing failed» or with alerts such as 0300-0D00-0002-0001 (bulge on the plate or dirty nozzle)…
Creality (1 guide)
- Ender 3 V3 SE: the Z axis does not move when homing, the gantry is crooked or the nozzle height is wrong
On the Ender 3 V3 SE, when you press «Home» the Z axis does not move up or down, the gantry leans backwards (towards the Z motor side) or, after the height measurement…
Elegoo (4 guides)
- Centauri Carbon 2: leveling fails with error 704 or 605 (bed pressure sensors)
During auto leveling, the Centauri Carbon 2 stops with error 704 («Leveling failed») or 605 (pressure sensor data error); sometimes the nozzle probes the same spot again…
- Neptune 3 Pro: levelling does not work, the first layer is uneven or the nozzle keeps going down
On the Neptune 3 Pro (and the rest of the Neptune 3 series) the first layer is uneven or does not stick even after levelling, or when homing Z the nozzle keeps going…
- Neptune 4: first layer too far or squashed after leveling, or the print head does not stop going down
On the Neptune 4 or 4 Pro, after automatic leveling the nozzle is too close to or too far from the bed and the first layer comes out wrong; you have to level every time…
- Neptune 4: Klipper motor error («TMC stepper… reports error», «No trigger on x…»)
The Neptune 4 or 4 Pro screen (or Fluidd) shows a motor error at power-on, when homing or while printing, and the printer stops.
Prusa (1 guide)
- MINI+: wrong first layer height, Live Adjust Z at its limit or Z rises while leveling (SuperPINDA)
On the MINI+ the first layer is too high or too squished, Live Adjust Z reaches -2.000 and the nozzle is still too far away, or during homing or mesh bed leveling the Z…
Qidi (1 guide)
- QIDI X-Plus 3: the bed crashes into the nozzle or the first layer does not stick
On the X-Plus 3 the bed rises until it hits the nozzle when leveling or starting a print, or the first layer comes out with gaps between the lines and does not stick…
Snapmaker (1 guide)
- Artisan: errors 13-12, 13-17, 13-18, 13-13 or 13-15 on the dual extrusion module
On the Snapmaker Artisan the print pauses and the screen shows 13-17 or 13-18 (the extruder is continuously pulled up) or 13-12 (the calibration sensor is abnormally…
Sovol (1 guide)
- SV08: the Z probe fails or the bed mesh is very uneven («probe triggered prior to movement», «No trigger on z…»)
On the SV08 the print head hits the bed or does not stop when going down; QGL (gantry leveling) or homing stops with messages such as «probe triggered prior to…
Voron (1 guide)
- Newly built Voron: motors reversed, homing the wrong way or endstops not responding
During the first startup of a Voron running Klipper, the toolhead homes to the wrong side or diagonally, a motor buzzes without moving, the wrong motor moves, or an…
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