0300_0100
Moderate
Bambu Lab · FDM 3D Printers
Hotend Heating Failed - Nozzle Cannot Reach Target Temperature
Quick Answer
Error code 0300_0100 on your Bambu Lab FDM 3D Printers means: Hotend Heating Failed - Nozzle Cannot Reach Target Temperature. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Navigate to the printer touchscreen: Settings > Maintenance and run the hotend diagnostic
2
Check the Bambu Studio device panel for the temperature curve to see if it rises at all
3
Power off and reseat the heater cartridge connector on the tool head PCB
4
Measure heater cartridge resistance with a multimeter (should be approximately 10-14 ohms)
5
Replace the heater cartridge if resistance is out of specification or open circuit
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
Bambu Lab hotend heater (model specific - X1/P1 vs A1 series)
Replacement tool head board (if MOSFET failure confirmed)
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