17301
Moderate
Prusa · FDM 3D Printers
MMU Filament Feeding Error - Filament Did Not Reach Extruder
Quick Answer
Error code 17301 on your Prusa FDM 3D Printers means: MMU Filament Feeding Error - Filament Did Not Reach Extruder. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Unload all filaments from the MMU and inspect each PTFE tube for kinks or clogs
2
Cut fresh tips on all filaments at a 45-degree angle
3
Clean the MMU selector mechanism and check the idler bearings for smooth rotation
4
Verify all PTFE tubes are the correct length and seated properly in the couplers
5
Run the MMU self-test from the printer menu to verify all channels feed correctly
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement PTFE tubes (set of 5 for MMU3)
PTFE tube couplers/fittings
MMU idler bearing set
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