F
e01
Moderate
FlashForge · FDM 3D Printers
Extruder Heating Failure - Nozzle Cannot Reach Target Temperature
Quick Answer
Error code E01 on your FlashForge FDM 3D Printers means: Extruder Heating Failure - Nozzle Cannot Reach Target Temperature. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
  1. Heater cartridge has failed with an open circuit
  2. Heater cable connector on the extruder PCB has come loose
  3. MOSFET controlling the heater output on the mainboard has burned out
  4. Incorrect heater cartridge voltage after a nozzle replacement
How to Fix It
1
Navigate to Tools > Maintenance on the touchscreen and run the heater diagnostic
2
Measure heater cartridge resistance with a multimeter (should be approximately 10-15 ohms for 24V/40W units)
3
Check the heater cable connection at the extruder board and the mainboard
4
Monitor the temperature readout on the touchscreen to determine if it rises at all or stays flat
5
Replace the heater cartridge if resistance is out of specification
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
FlashForge heater cartridge (model-specific, 24V)
Replacement extruder assembly (if connector is damaged)
Related Error Codes
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