Bambu Lab 3D Printer Error Code 0300_0100_0001_0001: How to Fix It

Q: Why does my Bambu Lab printer keep showing filament runout error when there's still filament?

This usually indicates a dirty or malfunctioning filament sensor, filament that's too loose on the spool causing detection issues, or debris in the sensor area. Try cleaning the sensor and ensuring the filament is properly tensioned on the spool.

Q: Can I disable the filament runout sensor on my Bambu Lab printer?

While technically possible through firmware settings, it's not recommended as the sensor prevents failed prints and potential extruder damage. Instead, focus on fixing the underlying sensor issue for reliable operation.

Q: What should I do if the error appears mid-print with plenty of filament remaining?

Pause the print immediately, check for filament tangles or binding, ensure the spool can rotate freely, and verify the sensor area is clean. If the filament path is clear, the sensor may need cleaning or replacement.

Q: How do I know if my Bambu Lab filament sensor is broken?

A broken sensor typically shows constant runout errors regardless of filament presence, fails to detect actual runout situations, or doesn't respond to manual filament tension tests. Physical damage or loose connections are also indicators.

Q: Is error code 0300_0100_0001_0001 the same as HMS 0300?

Yes, these are alternate ways of displaying the same filament runout sensor error on Bambu Lab printers. HMS 0300 is the simplified health monitoring system code for the same underlying issue.

Abstract

Error code 0300_0100_0001_0001 on your Bambu Lab 3D printer indicates the filament runout sensor has been triggered, meaning the printer has detected that filament has run out or broken during printing. This is a protective feature that prevents print failures and potential damage to the extruder.