A1 mini error code

[caleb_looney]

I’m using a bambu A1 mini, and every time the bed levels, it throws a “printing halted becuase automatic bed leveling failed”. When i go to see the solution, it throws error code HMS [0300-1800-0001-0006] [270741]. I can’t find this error anywhere on the error code list, does anyone know what is causing this error or how to fix it?

I fully cleaned all the rails, extruders, etc, but the error nonetheless persists.
Scanning the QR code only leads to the error code list which, in this case, is unhelpful.

[lion7718]

Check to see if your nozzle assembly is loose, if so read this.

A1 Mini & A1 Users: Solved: Screw fell out of toolhead

I’ve seen a few posts here & doing a Google search over the weekend after it happened to me. I noticed my first layer was bad, tramming the bed didn’t fix it. I changed the Z-Offset in Bambu Studio, it worked for a few prints. The Z -Offset would change during the print. The last print I started having extrusion issues. During a calibration a screw fell out of the toolhead. I took the toolhead apart & couldn’t find where the screw came from, I was at a lost & put in a support ticket. Support…

[caleb_looney]

Tried this, popped open the assembly and tightened screws
Unfortunately, no luck; the bed leveling cycle threw the same error.

[user_3229883486]

I was having this same issue. I popped off the plate and saw there was a small bit of melted PLA squished underneath it. I flicked it off, replaced the plate, and it fixed the issue.

[caleb_looney]

Sure enough! Checked and there was a tiny speck of plastic (paper clip for scale). Thank you so much!