Prusa MK4S
MK4S · FDM 3D Printers
14 known error codes for this model
10101
Moderate
Firmware Update Failed - Flash Process Did Not Complete
12201
Easy Fix
MINTEMP Hotend - Thermistor Reading Below Minimum Threshold
12202
Moderate
MAXTEMP Hotend - Temperature Exceeds Maximum Safe Value
12203
Moderate
THERMAL_RUNAWAY Hotend - Temperature Deviated Beyond Safe Range
12211
Moderate
MINTEMP Bed - Heated Bed Thermistor Reading Too Low
12212
Moderate
MAXTEMP Bed - Heated Bed Temperature Exceeds Safe Maximum
12213
Moderate
THERMAL_RUNAWAY Bed - Heated Bed Temperature Unstable
12303
Moderate
Z-Axis Homing Failed - Z Probe Did Not Trigger
12401
Moderate
USB Communication Error - Serial Connection Lost
12601
Easy Fix
Filament Sensor - No Filament Detected
12602
Easy Fix
Filament Autoload Failed - Sensor Detected Filament But Loading Did Not Complete
13201
Easy Fix
Power Panic - Unexpected Power Loss Detected
21201
Easy Fix
Hotend Fan RPM Too Low - Cooling Fan Underperforming
21202
Easy Fix
Print Fan RPM Anomaly - Part Cooling Fan Speed Inconsistent