I am also having this issue, preliminary testing tells me this is about nozzle temperature. Both too hot or too cold seems to cause tiny clogs that is the root of this error. I do not believe these are truly “false” errors, I think the normal timelapse check at level 3 just happens to also trigger the clog warning even if there is just a very tiny amount of filament on the nozzle. Idon’t know why it just is not set to wipe the nozzle again before the timelapse check. I bet that would solve this issue.
I had the same issue. Clumping detection was turned off, but still error on 3rd layer test-sequence. Unscrewed the heatblock, and found small remnants of burnt filament lodged around thermistor wires. Must have been a small clump that I never caught. Managed to remove it all, but also removed some things that I think was supposed to be there (white plastic).
Wire brushed nozzle and heatblock and all is fine now.
Silicone sock had minor damage. Piece missing around nozzle. But I had no other, and it seems to work ok.
I’m having the same issue. Used to just get the error message occasionally, now it’s every fricken print. I’ve had the POS three months and this sensor is the third part to fail. Between this BS and all of Bambu Lab’s other BS I’ll never buy or recommend another Bambu printer to anyone.
might found this usefull but then i have to trash my tool box for it to work.file: A1 mini side box by ShapeX
Check and see if the little rubber bit has melted onto the nozzle, that fixed it for me
Been having this issue recently (I think it’s been since I updated something), gonna try this!
I’ve started getting this error recently. No build plate mods on the A1 mini and occasionally the print will stop and give me this error. I click continue and it works fine again for a while, but sometimes will occur again multiple times. Most recently I did a 4 hour print overnight and it had stopped about 90 min in. Restarted it and it stopped again 3 or 4 more times.
The first thing I tried was cleaning the nozzle with a wire brush, but it still looked a bit dirty and I was still getting the message so I replaced it with another hardened steel nozzle. But that didn’t solve it either apparently since it’s still happening.
EDIT: Ok, I think I found it. I forgot about the chain mod thing on the side. It was there when I bought it secondhand so I don’t think about it. The bottom piece that connects to the printer had come off and kept getting stuck when the nozzle went down all the way.
I’m having a similar issue.
The main difference is it doesn’t occur at the third layer, but long into the print say about 75-80% of the print, both on 3 hour prints and 10 hour prints.
Resuming allows the printing to continue.
On the same print it stops on the same spots.
Was printing an interlocked spiral and this happened when printing one model and when printing 3 at once.
The only modification I have is a shield to stop the poop from being kicked across the room, but I did upgrade Bambu Studio recently. I’ll try reverting it and see what happens.
For reference I have the A1, and had it for less than a month.
Happening here as well.
I believe it started when I changed nozzles.
Really wanted to thank you, my 165mms tpu mini is back… Erasing the Timelapse g-code fixed this issue for me.
Still using Orca 2.20
got the false nozzle covered problem and tried this workaround. Works like a charm! +1
Finally the real fix! Thank you so much
Changing to a new nozzle fixed it for me.
Thanks for sharing. It definitely helps !
I had the same, since I fix this code I don’t have this issue anymore.
Thank you for this, happening with my A1 Mini on every single print with the detectors turned off in the settings.
I was having the same issue every time I print a model and it was happening specifically after the 3rd layer. I believe when the printer is printing the third layer it goes to the back right of the plate slightly off the plate to check for nozzle clumps. However, around the back right of the printer I have had a small tool box placed that was stoping it from going all the way down and back. this was the reason why I was getting this error every time.
I tried removing the custom storage box that i mounted beside the bed and it fixed the issue. I’m no longer getting false notif for 2 days now.
I also experienced this problem and the A1 printer is only two weeks old. I followed the instructions for cleaning and checking the nozzle and it was all clear. After reading the above I removed the A1 Build Plate Aligner I had printed and the problem disappeared. I’ve now managed to print five things without any issues.
I wish I could resolve this issue. I have tried everything I possibly can and it happens every single print, without exception. I think may revert to a previous version and see if that fixes it. When my A1 does this, the print head is completely off the plate, so I don’t know how it triggers the error.
It seems that the issue was resolved back when all this was discussed in 24/25. However I am now getting this same false message now (this started 20 March 2026) and not after the third layer but often 5 hours into a 10 hour print! There are no filaments covering the nozzle and bed plate has been aligned for the previous hours so that is not true! Anyone have any input here because it is rather annoying if this fault occurs in the early hours of the morning and by the time you find out the model has cooled (and deformed slightly) so when you resume there is a very clear line of disconnect!