Well I am on day 3 of owning my new X1 Carbon and still unable to print. I have submitted tickets. This reminds me of when I bought the original MakerBot. Why didn’t I learn my lesson! I just dont understand all the positive videos regarding this printer. I am a Creality Fan Boy and own 3 of there printers. Was always able to work through problems. With all the rave reviews I decided to take a chance and am hugely disappointed. If I cant get it to print by Monday its going back!
You need to check the filament path. Check the Filament section on the printer screen, does it show something loaded? If you can, post photo of it for further help. You might need to disassemble the extruder or possibly disconnect the PTFE tube from the top of the hot end and feed a small filament piece as you set the temp to working temperature and manual extrude it to clear whatever is in there.
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Thank you for the reply maximit. I have taken the whole hot end apart and took the filament sensor out and checked it under a magnifying glass no filament found any ware.
I did have this same problem.
It was the metal switch that was rubbing the clear filament sensor housing. I had to file some of the clear plastic till the switch moved freely. This was after a 1000 hours of use.
This worked for me and is still in service.
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Hey Barry TY for the reply and yea I checked that little metal tab with the spring and it was moving freely
The only thing left that i can think of is change the extruder out. I’m guessing the halls effect sensor is bad and not picking up the metal switch as it gets closer to the pcb.
I have a spare just the this reason. But have not had to use it yet.
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I bet thats it. Is there a place to purchase those. I have been looking through the Bambu store but a lot of things look back ordered
Just before you go ordering parts, I’m assuming you haven’t pulled the extruder out or stripped it down. Here is a good start in the BL wiki. Replacing the extruder | Bambu Lab Wiki
The extruder assembly is fairly easy to strip down once out, it’d be worth having a look to see if theres any small bits of filament jammed in there.
Edit, see GenericUser’s reply below before buying one.
Wow, I just checked their site and the Accessories used to have 6 pages of items, they’re down to just two now… They do have a complete extruder here which includes the sensor: Otherwise waiting for Bambu might take longer that you’re hoping for. I’m still waiting on a reply from them that’s going on week two now…
The Wiki is rather well thought out and gives a clearer understanding where an issue is. Could save people spending money on parts they won’t need 
@GenericUser Point well taken, I often assume people have exhausted normal resources and shouldn’t assume that. I’ll edit my reply. Thank you.
So the pic shows that it thinks there is a filament loaded into tool head. The sensor responsible is the hall sensor. I had the exact same issue when I first got my X1c after a few weeks. You need to take apart the extruder and unscrew the top part where the sensor is and check the fit, move it around back and forth a few times and check for foreign particles. Its held onto the extruder by 2 small screws, dont over tighten them as its metal into plastic! Also check the sensor wiring plug. If it still shows the filament as loaded by that black dot in the tool head on the filament section, this is the part needed:
That sensor was my guess, but just check before ordering parts. New printers fail, but the greater percentage don’t and often theres a stray bit of dust or foreign material botching up the works.
Thank you all for your input! I did order the whole extruder i think that may arrive before my ticket gets answered 
Thank you all again, and just found the discord, will prob see some of you there.
Sorry you are dealng with this. I saw the extremes of good and positive experiences people had so when I got my printer in November, I was hoping I got a flawless printer instead of a dud and luckily I did.
I have been using it a lot and the only problems I have had were minor and caused by me, except for one bad flow dynamics calibration that lead to over extrusion, which was solved by calibrating the filament again.
It is a very great printer, but they obviously have some quality control issues that they can hopefully figure out and resolve going forward.
Well I got my NEW Extruder today. It is installed and it recognized ALL My filaments in the AMS and no longer getting that error. New calibration running now. So i get to deal with Bambu to re-coop the $$ for the new extruder at least I get to play now Thank you all again, looking forward to being part of this community.
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That’s great news! Now you will see why people speak so highly of this printer. Hopefully that was the only faulty part.
Hello dear colleague, your problem has been solved, but since the cause of the same error message on my X1C was found in a completely different place, I would still like to add something… maybe it will help some of you.
The error occurred in the middle of printing during the automatic filament change. The filament did not come out of the empty spool because it was inserted far too deep into the hole at the bottom of the spool during production (since then I have checked this before inserting a new spool and shorten the excess length if necessary). Due to the relatively high tensile force of the AMS, the PLA filament broke directly at this hole in the spool base (presumably it had been damaged by previous moisture and was therefore more brittle than usual). Shortly before the AMS exit, the filament, which had buckled at the very end, got stuck again and broke a second time. The extruder used up the remaining filament, and when the filament from the new spool was to be fed in, this did not work because a piece about 1.5 cm long was still stuck in the exit of the AMS.
It took me a while to decide to dismantle the AMS and it took me even longer to remove the piece of filament. But in the end it worked without causing any damage and everything is working perfectly again. I haven’t had this problem since (about 1 year ago).
So before anyone buys a new extruder out of sheer desperation, they should thoroughly check whether all filament paths to it are really clear… especially when using the AMS.
Greetings from Stefan from the U-Allgäu (Southern Germany)
Hallo werter Kollege, Dein Problem ist zwar gelöst, da jedoch die Ursache für die selbe Fehlermeldung bei meinem X1C an einer ganz anderen Stelle zu finden war, möchte ich dennoch was hinzufügen… vielleicht hilft es dem ein oder anderen.
Der Fehler trat mitten im Druck beim automatischen Filamentwechsel auf. Das Filament löste sich nicht aus der leeren Spule, weil es bei der Herstellung viel zu tief in das Loch am Spulenboden eingeführt war (seither überprüfe ich das vor dem Einlegen einer neuen Spule und kürze den Überstand bei Bedarf). Aufgrund der doch relativ hohen Zugkraft des AMS, brach das PLA-Filament direkt an diesem Loch im Spulenboden (vermutlich war es durch frühere Feuchtigkeit vorgeschädigt und dadurch spröder, als üblich). Kurz vor dem AMS-Ausgang verhakte sich das ganz am Ende stark abgeknickte Filament erneut, und brach ein weiteres mal. Der Extruder hat das restliche Filament verbraucht, und als das Filament aus der neuen Spule nachgeschoben werden sollte, klappte dies nicht, weil ja ein Stück von ca. 1,5 cm Länge noch immer im Ausgang des AMS feststeckte.
Es hat ein wenig gedauert, bis ich mich dazu entschlossen hatte, das AMS zu zerlegen, und noch ein bisschen länger hat es gedauert, bis ich das Stücken Filament entfernt bekommen hatte. Aber letztendlich hat es ohne Schaden anzurichten funktioniert und alles arbeitet wieder perfekt. Ich hatte dieses Problem seither (ca. 1 Jahr her) nicht wieder.
Also bevor sich jemand aus lauter Verzweiflung einen neuen Extruder kauft, sollte er ganz gründlich prüfen, ob alle Filamentwege bis zu ihm auch wirklich frei sind… besonders bei der Verwendung des AMS.
Gruß von Stefan aus dem U-Allgäu (Süddeutschland)
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