Generic Filament Runout Sensor Strip for Bambu Lab P2S
Overview
A replacement filament sensor for the Bambu Lab P2S. It sits in the upper section of the extruder assembly and keeps track of whether filament is feeding in or has run out during a print. Use it to fix failed feed detection, a broken internal component or an aging wire fault on the stock sensor.
Key Features
Made specifically for the Bambu Lab P2S
Replaces a faulty or worn feed detection sensor
Monitors filament feed and runout in real time while printing
Works with the original AMS, recognising filament being inserted and pulled out so multi-colour switching stays smooth
Comes with the mount screw and a matching H1.5 hex wrench for a quick swap
Compatibility
Bambu Lab P2S only
Not compatible with X1, X1C, X1E, P1P, P1S, A1, A1 Mini or other series
Installation
Power off and unplug the printer before starting any work on the toolhead electronics.
Remove the rear shell of the toolhead, take out the filament cutter and pull out the PTFE tube.
Swap the sensor using the supplied H1.5 hex wrench, then reassemble.
Bambu Lab publishes an official installation guide for this repair on its wiki.
 
Note: Bambu Lab is a trademark of its respective owner and is used only to indicate compatibility.