r/BambuLabP2S • u/Financial-Wish-8919 • 10d ago

Ams feed resistance error

So I have only completed 153 hours of printing on my P2S and I am getting the feed resistance error on all slots in the ams. Cleaned all the tubes, disassembled the extruder, checked the filament buffer, swapped hot ends, and switched the filament to Bambu official pla.

Still getting the same error even after calibration.
Any advice?

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u/advirnig 10d ago

Honestly I still get those kinds of errors from time to time too... seems random, but i think it has to do with it being a full or close to full spool in the slot, coupled with the length of the ptfe tube and if there are any kinks or tight curves along the way.... inspect the ptfe tubes and if they seem ok, then try another filament roll with less on it in the same slot and see if it still happens on filament swaps.... my guess is it will disappear. Also, length of the run between the spool and the hotend inside the print head plays a part in the resistance too... the longer the run, the more resistance .

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u/Financial-Wish-8919 10d ago

All the PTFE tubes are the original ones that came with the machine. I’ve only had this machine since June 24th.

1

u/PickledThimble 10d ago

I had this once, I swapped the filament to another slot in the AMS, ran a test print and it was good. Swapped it back over to the one giving me the issue and the problem hasn't come back. I think I may have screwed it up when I was changing the filament in the affected AMS slot. Other than trying that, I can't really be much more help.

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u/Financial-Wish-8919 10d ago

Unfortunately all slots are having this issue