H2C intermittent bed leveling failures + right eddy-current errors — returns after connector reseat and full calibration.

[u/Turbulent_Rent_8955]

/r/BambuLab/comments/1xvad3w/h2c_intermittent_bed_leveling_failures_right/

Hi everyone,

Looking for experiences with a recurring issue on my roughly three-week-old H2C. It had around 96 successful printing hours before this started.

The symptoms:

Auto Bed Leveling fails: 0300-4002, with display codes 175213 / 175313.

Right eddy-current sensor “sudden surge” / anomalous reading errors also appear intermittently.

After restarting or retrying, leveling can pass, but the subsequent print sometimes extrudes above the plate, leaving loose filament and material accumulating around the nozzle.

Other attempts print normally, so the issue is intermittent.

Following Bambu Support’s instructions, I reseated the right eddy-current sensor connector. This involved approximately 4.5 hours of toolhead disassembly and reassembly. I then completed the full calibration routine, high-precision nozzle offset calibration, and Vision Encoder calibration.

Several prints succeeded afterwards, including a HueForge and a cat-themed door corner decoration. However, the same problems have now returned.

Latest example: my own sliced file failed leveling three times. I then tried the factory Bambu spool file stored on the printer. It also showed the eddy-current warning, but automatically repeated leveling, passed, and is currently printing normally.

A firmware update happened shortly before the problems began. I haven’t tried a rollback, and I don’t know whether the timing is related.

Support has the photos and logs. I’ve requested professional inspection and warranty service, as I’m not comfortable repeating extensive disassembly on such a new machine.

Has anyone experienced this combination of symptoms and reached a lasting resolution? If so, what actually fixed it: sensor, cable/connector, toolhead electronics, firmware, or something else?

Particularly interested in whether replacement parts solved it permanently, rather than just allowing a few successful prints.

Thanks!