Overview
This page is aimed to help troubleshoot the error codes that the Bambu printers have, since a string of numbers and letters is not very clear.
Expect this page to get updated over time.
Error Code Grid
| Error Code | English Translation | How To Fix | Wiki Entry |
| 0700-0200-0001-0001 | AMS filament speed and length error; the filament odometry may be faulty. | – Check for tangles or heavy drag in the AMS path and buffer. – Make sure filament feeds smoothly by hand with AMS door open. – Power‑cycle printer and AMS; if the error repeats, open a support ticket because the AMS sensor may be failing. | https://wiki.bambulab.com/en/hms/hmscode/HMS_0700-0200-0001-0001 |
| 0700-4001 (07004001) | The AMS has been disabled for this print, but still has filament loaded. | – On the printer screen or Bambu Studio, either re‑enable AMS for this job or unload the AMS slot that is still engaged. – If you want to print from the rear spool holder, unload AMS filament for that toolhead and restart the print. | https://wiki.bambulab.com/en/hms/hmscode/HMS_0700-4001-0000-0001 |
| 0701-4001 (07014001) | Filament is still loaded from AMS after it has been disabled. | – Use the unload function to pull filament out of the AMS path. – Confirm the printer is set to use “External spool” or rear holder for that tool; then restart the job. | Bambu Lab HMS Error Codes |
| 0700-8001 / 07008001 | AMS filament has run out. | – Load a new spool into the AMS slot indicated on screen. – Cut the filament tip cleanly, feed it to the AMS until grabbed, then press Retry on the printer. – If you do not want to continue with AMS, unload and switch the job to the rear spool holder. | Bambu Lab HMS Error Codes |
| 0701-8001 / 07018001 | Failed to cut the filament; cutter error. | – Open the AMS side cover and visually check the cutter area for debris or bent filament. – Clean any filament chips and verify the cutter can move freely by hand (follow safety notes). – After clearing, close the cover and press Retry. If it continues, contact support for a cutter replacement. | Bambu Lab HMS Error Codes |
| 0701-8002 / 07018002 | The cutter is stuck. | – Gently pull out and reseat the cutter handle as described in the AMS maintenance guide. – Look for filament wedged around the blade and remove it. – Press Retry and watch the first couple of tool changes to confirm normal operation. | Bambu Lab HMS Error Codes |
| 0701-8003 / 07018003 | Failed to pull filament out of the extruder; possible clog or broken filament. | – Use the “Unload” or “Cold pull” procedure to clear the hotend and extruder. – Inspect the PTFE tube between extruder and AMS for a broken piece of filament and push it through if needed. – Once the path is clear, reload filament and resume the print. | Bambu Lab HMS Error Codes |
| 0701-1000 / AMS slot motor slipped (e.g. 0701100000010001) | AMS slot motor slipped; extrusion wheel may be worn, filament may be too thin, or there is high resistance. | – Check that the filament diameter is consistent and not soft or ovalized. – Ensure the spool can rotate freely and the filament is not tangled or rubbing the case. – Try a different filament; if the same slot keeps slipping, the AMS slot may need service. | Bambu Lab HMS Error Codes |
| 0701-2000 / AMS slot empty (e.g. 0701200000020002) | The selected AMS slot is empty or the filament has broken in the AMS. | – Confirm that a spool is actually installed in the indicated slot. – Open the AMS and check whether filament has snapped; remove any loose piece and reload. – Press Retry or restart the job after reload. | Bambu Lab HMS Error Codes |
| 0701-3000 / AMS RFID error (e.g. 0701300000020002) | RFID tag on the AMS slot is damaged or cannot be read. | – The filament can still be used; you just lose auto‑profile from RFID. – Manually pick material type and profile in Bambu Studio or on the printer. – If RFID errors appear across multiple slots, the AMS RFID board may require service. | Bambu Lab HMS Error Codes |
| 0C00-0300-0002-0004 | First layer inspection is not supported for the current print job. | – This is informational; the print can usually continue. – First layer inspection may be disabled for some models or file types; verify the feature settings in Bambu Studio. – Enable first layer inspection only for supported models if you rely on it for unattended printing. | Bambu Lab HMS Error Codes |
| 0C00-0300-0002-0005 | First layer inspection timed out; results may be inaccurate. | – Inspect the first layer manually on the build plate before leaving the print unattended. – Check that the camera view is not obstructed and your network connection is stable if using remote inspection. | Bambu Lab HMS Error Codes |
| 0300-0200-0002-0001 | Bed temperature sensor error (thermistor issue or loose cable). | – Pause the printer and let the bed cool to room temperature. – Power the printer off and check that the bed cable and connector are fully seated under the bed and in the base. – Inspect the cable for visible cuts, burns, or pinches; do not continue if damage is found. – If the error returns after reseating, open a support ticket; the bed thermistor or cable may need replacement. | Bambu Lab HMS Error Codes |
| 0300-0200-0003-0001 | Nozzle temperature sensor error (hotend thermistor issue). | – Stop the print immediately to prevent damage. – After cooling, check the hotend cable at the toolhead for a loose or partially unplugged connector. – Make sure the hotend is firmly locked in place and that there is no melted plastic around the connector. – If the error persists, replace the hotend assembly or contact support, as the thermistor is usually not serviceable alone. | Bambu Lab HMS Error Codes |
| 0300-0300-0001-0001 | Heater runaway or abnormal heating detected on the nozzle. | – Turn the printer off and disconnect power; do not keep printing with a heater error. – After cooling, inspect the hotend area for loose wires, scorch marks, or melted connectors. – Ensure you are running the latest firmware before attempting another heat‑up. – If any visual damage is present or the code repeats, stop using the printer and contact Bambu support for guidance. | Bambu Lab HMS Error Codes |
| 0300-0300-0002-0001 | Bed heater error or abnormal heating on the build plate. | – Power the machine off and allow the bed to fully cool. – Check that nothing metallic or conductive is stuck under the plate or on the contacts. – Reseat the build plate and verify it is the correct plate type for the profile you are using. – If the error recurs, discontinue use until the bed and wiring have been checked by support or a qualified technician. | Bambu Lab HMS Error Codes |
| 0400-0200-0001-0001 | Bed leveling failed; Z‑calibration or mesh probing error. | – Remove the plate, clean any filament blobs or debris from the nozzle and bed, then reinstall the plate. – Make sure the plate is fully seated and latched on all corners. – Run a manual “Calibration – All” from the printer menu before your next print. – If probing always fails in the same spot, inspect the plate for warping and replace it if necessary. | Bambu Lab HMS Error Codes |
| 0400-0300-0001-0001 | Flow calibration / pressure advance calibration failed. | – Verify the nozzle is not partially clogged by performing a cold pull or swapping to a fresh hotend. – Check that filament is dry and not extremely soft or brittle. – Re‑run “Flow calibration” with default speeds and avoid touching the printer during the test. – If it still fails, use a known‑good filament profile rather than auto‑calibration for that material. | Bambu Lab HMS Error Codes |
| 0500-0200-0001-0001 | Filament runout detected at the extruder (not AMS‑side). | – Check that there is still filament on the spool or in the AMS slot feeding the tool. – If the spool is empty, load a new spool and cut a clean, sharp tip. – Feed filament to the extruder until it is grabbed, then use “Load” and resume the print. – If the code appears with a full spool, inspect the runout sensor area for debris or a stuck lever. | Bambu Lab HMS Error Codes |
| 0500-0300-0001-0001 | Extruder motor overload or step loss (possible clog or grinding). | – Listen for clicking or grinding from the extruder during printing and stop the job if heard. – Heat the nozzle and unload the filament; check the tip for a thick plug or burnt material. – Perform a cold pull or replace the nozzle/hotend if resistance is high when pushing filament by hand. – Reduce print speed and flow for very viscous filaments after clearing the blockage. | Bambu Lab HMS Error Codes |
| 0600-0200-0001-0001 | Axis homing failed (X/Y/Z endstop or obstruction). | – Power the printer off and move the toolhead and bed gently by hand to feel for binding. – Look for stray parts, clips, or prints that might block motion on any axis. – Turn power back on and run a homing cycle with the door open so you can watch movement. – If an axis consistently fails to home, check belt tension and open a support ticket for possible sensor or motor issues. | Bambu Lab HMS Error Codes |
| 0600-0300-0001-0001 | Y‑axis belt or motor stall detected during printing. | – Inspect the Y‑axis rails and rods for dirt or hardened grease and wipe them with a lint‑free cloth. – Verify that the bed moves smoothly front to back without scraping the side panels. – Check belt tension; it should be firm but not excessively tight or loose. – If stalls continue, lower acceleration and speed and contact support if the belt or motor looks damaged. | Bambu Lab HMS Error Codes |
| 0700-0200-0002-0001 | AMS communication error between printer and AMS hub. | – Power off the printer and AMS, then reseat the AMS communication cable on both ends. – Avoid routing the cable sharply around corners or under heavy objects. – Turn the printer back on, wait for the AMS to initialize fully, and then start a small test print. – If multiple AMS units are daisy‑chained, test with only one connected to isolate the fault. | Bambu Lab HMS Error Codes |
| 0700-0200-0003-0001 | AMS internal sensor error (general AMS fault). | – Power‑cycle the printer and AMS and wait for all AMS LEDs to show normal status. – Remove all spools and check for loose filament fragments inside the AMS channels. – Run a short multi‑color print to verify all slots can load and unload. – If the error repeats or specific slots consistently fail, contact Bambu support with the exact code from the screen. | Bambu Lab HMS Error Codes |