Occasionally RFID filament detection fails to identify the Bambu Labs filament. Re-inserting the filament and clicking the refresh button in Bambu Studio also does not fix the issue. I find that doing a hard restart with the power switch in the back does the trick and things work properly after that. It seems like others are experiencing a similar issue.
Is there anything I can provide to troubleshoot the issue which seems to be a bug in the AMS?
I’ve had it happen a few times also. Seems like a power reset is the only way to get it to identify properly when that happens.
Which is a bug. @BambuLab anything we can do to help eliminate this bug? It is annoying especially given this requires a hard reset and there is no way to reboot remotely.
Happening with a new Bambu Lab Red ASA for me. Practically the first time I’ve used a Bambu Lab spool in the unit since I bought it…and then it doesn’t save me one bit of time or effort. There’s little incentive to buy their branded filaments if the RFID stuff doesn’t work.
Unfortunately, this seems to be still an issue. Just bought a P1S with AMS. After working corectly for the first few prints, I also encounter this behaviour. No reliable detection of Bambu filament. This is really annoying, because there is no advantage using/buying Bambu filament. Hopefully this will be solved soon.
Jochen
Same problem, first spool i used it worked than nothing since…guess i should start using other companies filament if i am not going to get a benefit…
Add me to the list. AMS Lite used to work fine. Now it won’t detect the filament in the correct locations and thinks I have 3 loaded instead of 4.
Hi,
i have the same Issue. So i need to change it manualy. Any response from Bambu?
Regards,
D.
Any fixes on this at all? I recently purchased Bambu PA6-CF, which the AMS detected fine, but since then i’ve swapped that filament out for some Generic PLA Silk. However, the AMS refuses to believe that the PA6-CF is not there and continues to show it instead of a ? , which is normally what I see when I load Generic PLA types. It’s almost like the SW just assumes it is the same filament type when you change filament to something that doesn’t have an RFID tag. Gotta be honest this seems like a very easy SW fix guys?
2 of my AMS slots have never been able to read the RFID tags. Is there a sensor that can be replaced?
My AMS never seems to automatically register/read the RFID chip. Has Bambu not helped anyone on this yet??
AMS Not Being Detected – Update Issues
My AMS is not being detected. It shows no filaments loaded, and the option to load filaments is grayed out. No LED lights turn on, and when I try to insert filament into the feed hole, nothing happens.
However, the printer does detect the AMS in the update menu—it shows that the AMS needs an update, and that notification disappears when I disconnect the AMS. But that’s the only sign of detection.
When I tried updating the printer and AMS together, the update failed. So, I disconnected the AMS and updated the printer first, which worked. Then, I tried updating the AMS alone, but it repeatedly failed at 99%.
Everything was working perfectly until yesterday when I attempted to print something from my PC using the Bambu Studio app. My printer wasn’t showing up as an option no matter what I did, which had never happened before.
Has anyone experienced this issue or found a fix, please let me know?
I’m in the same boat - AMS 1, slot 2 is not detecting any Bambu filament. I’ve swapped filaments between slots, and they work in every other slot except this one, so it’s not my filament. I power off my printer when not in use, so power cycling has done nothing for me.
That’s exactly my experience today with my P1S. Anyone have any suggestions ?
Mine randomly started working today out of the blue. I don’t expect it to last, though.
My X1C (bought Black Friday 2024) seems to have this issue as well. So far it’s only happened with one particular roll of filament (BL PLA Silk Apple Red, if I’m not mistaken). I tried putting it in different slots of the AMS but no go. The AMS does recognize other rolls with an RFID tag, so I suspect it’s something to do with the position of the tags and perhaps also with it begin a refill roll or not.
how do i do a hard restart? mine just completely ignores the filament no matter how many time i power it on and off
Welcome to the forum.
Which printer are you using? Are their lights on the AMS? Are you sending the print with the AMS enabled?
I am having a similar problem with my P1S and the two connected AMS. The problem occurs when I insert a non-Bambu filament. I can’t define the type and if I use the mobile app I get a ‘fail’ message and that’s it. This has been happening for a few days now, regardless of which ams … on both in the same way even if I unplug one of them. Any ideas what it could be?
I have also tried a firmware downgrade, sometimes it seems to work, but then again it fails.
I am still fairly new to 3d printing. I bought my P1S at the end of March 2025. Slot one of my AMS will occasionally state that it is empty even though it does have filament loaded. I can remove it and load new filament into it and it will feed through but then state that once again it is empty. previously when this happened I rebooted it then it began to work bit this time I have not had any luck. From what I have found it could be a sensor problem but I am unsure. Or could it be a RFID issue?
I submitted a support ticket a few days ago with no response yet.
Has anyone else had occasional issues like this?