filament_runout
Easy Fix
Creality · FDM 3D Printers
Filament Sensor Triggered - No Filament Detected
Quick Answer
Error code FILAMENT_RUNOUT on your Creality FDM 3D Printers means: Filament Sensor Triggered - No Filament Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Check if the filament spool is actually empty and replace if so
2
Inspect the filament path from spool to extruder for any breaks
3
Remove and reinsert filament through the sensor to verify it detects properly
4
Clean the filament sensor internals with compressed air
5
Test the sensor by sending M412 S1 to enable runout detection and manually triggering it
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Replacement filament runout sensor
New filament spool
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