Brand error code lookup — Bambu, Prusa & Creality
Your printer is showing a cryptic error code and you need a fast answer. This page is a quick-reference table for the most common error codes across Bambu Lab, Prusa, and Creality — what each one means in plain English and the first step to resolve it. For deep-dive articles on specific error classes, see the related links at the bottom.
The 30-second answer
Use Ctrl/Cmd+F on this page to search for your code. Codes are grouped by brand. Most are wiring/cable issues at the hotend (caused by movement fatigue), filament jams, or a stalled sensor — in that order of frequency. If a code suggests "system error", power-cycle first; if it persists, contact support with a photo of the error screen and a description of what you were doing when it triggered.
Bambu Lab error codes (X1 / P1 / A1)
Bambu uses an alphanumeric prefix system. The first 2 letters indicate the subsystem (TE = temperature/extruder, FB = filament buffer, AC = AI camera, etc.) and the digits identify the specific fault. Bambu's official error code dictionary on the wiki lists hundreds; below are the ones operators see most often.
Heating & temperature (TE / TF / TR codes)
| Code | Meaning | First step |
|---|---|---|
| TE2111 | Nozzle temperature below minimum extrusion temperature | Wait for hotend to heat. If it never does, see TE2509/TE2515. |
| TE2509 | Unable to obtain nozzle temperature — thermistor may be disconnected | Check toolhead cable connection; inspect for damaged wires near the hotend. |
| TE2515 | Nozzle temperature exceeds limit — thermistor may be short-circuited | Power off immediately. Allow cooling. Inspect for melted insulation or shorted wires. |
| TE2564 | Nozzle is not heating as expected | Check heater cartridge seating and connection. |
| TF0501 | Heat break fan speed too low | Replace or clean the hotend cooling fan. Heat creep risk if ignored. |
| TF0526 | Model (part cooling) fan speed too low | Inspect fan; clean dust; replace if seized. |
| TR0116 | Filament run out — printing paused, please refill | Load new spool, click resume. |
Filament / AMS / CFS-equivalent (FB / FO / FR codes)
| Code | Meaning | First step |
|---|---|---|
| FO0528 | Printer printing without extruding | Check for clog; verify spool moves freely; AMS check. |
| FR0121 / FR0122 | Spool-source mismatch (AMS vs external) | Unload current filament and reload via the requested path. |
| FR2832 / FR2833 | Retract or feed issue — check for filament/spool jams | Open AMS, inspect spool, check for tangles. Retry. |
| FR2839 | Filament runs out, please refill | Reload spool. |
Motion / homing (CX / CY / CZ codes)
| Code | Meaning | First step |
|---|---|---|
| CX2566 | X-axis motor drive abnormality | Check belt tension and that nothing obstructs the X-axis movement. |
| CX2573 | X-axis homing abnormality | Make sure the toolhead can reach the home position; check for obstruction or loose belt. |
| CY2567 / CY2577 | Y-axis motor drive / homing abnormality | Same checks for Y-axis. |
| CZ2568 / CZ2581 | Z-axis motor drive / homing abnormality | Check Z-lead screw, couplers; make sure bed isn't stuck. |
| CZ2588 | Z-offset exceeds limit | Re-run Z-offset calibration. |
| CZ2768 | Z-axis homing issue, may have external disturbance | Don't touch the printer during homing. Verify bed is clean. |
AI / camera / quality (AC / AL codes)
| Code | Meaning | First step |
|---|---|---|
| AC0101 / AC0500 | Print quality issue detected by AI | Inspect print. Accept (continue) or stop. Tune AI sensitivity if false positives. |
| AC0103 / AC0503 | First-layer print quality issue | Re-check bed adhesion / Z-offset. |
| AC0104 | Foreign object detected on printing plate | Clear plate. |
| AC0117 / AC0523 | Model warping detected | Inspect; consider abort if corners lifting. |
| AC0509 | Chamber temp too high, camera off | Auto-recovers when chamber cools. |
| AC0510 | Camera failed to start | Restart printer. |
Belt tension / calibration (CA codes)
| Code | Meaning | First step |
|---|---|---|
| CA0120 | Belt tension abnormal — rerun input shaping | Run input shaping (resonance compensation) from settings. |
| CA2710 / CA2711 | Belt tension module abnormal / Auto belt tension failure | Restart; if persistent, contact Bambu support. |
Prusa error codes (MK3/MK3S/MK4/MK4S/CORE One/XL)
Prusa firmware (Buddy on MK4 and beyond, RepRap on older boards) uses descriptive names rather than alphanumeric codes. The most common errors:
| Error | Meaning | First step |
|---|---|---|
| MINTEMP HOTEND | Hotend thermistor reading below safe minimum | Check hotend wiring. Most likely a broken thermistor cable. |
| MAXTEMP HOTEND | Hotend thermistor reading above safe maximum | Power off. Check for shorted thermistor wire. |
| MINTEMP BED / MAXTEMP BED | Same for the heated bed | Check bed cable; the bed harness flexes a lot on MK3 bedslingers. |
| Thermistor disconnected | Reading invalid — same as MINTEMP semantics | Re-seat the thermistor; replace cable if intermittent. |
| Thermal runaway | Heater/thermistor feedback loop broken | See the dedicated thermal runaway article. Don't bypass. |
| Heater shutdown | Heating watchdog timeout | Usually fan-blowing-on-block or loose heater cartridge. |
| Filament sensor: filament not detected | Run-out sensor sees no filament | Load filament; verify run-out sensor lever moves freely. |
| Crash detection: X-axis | The Trinamic driver detected resistance | Look for obstruction; lower travel speed if frequent. |
| Bed leveling failed | Mesh probe touched out-of-range value | Clean the SuperPINDA probe; verify Z=0 reference; clean the bed. |
| SD card error | Card not readable | Try another SD card; reformat as FAT32. |
| Loadcell calibration failed (MK4/CORE One) | First-layer-calibration loadcell didn't detect contact correctly | Check nozzle is clean and bed is clean; re-run calibration. |
Creality error codes (K-series, V-series, F-series)
Creality's K1, K2, F (Falcon), and V (Ender 3 V3) series use Klipper-derived firmware ("Creality OS") with a brand-specific alphanumeric error code system. Below are the most-common operator-facing codes (taken from the Creality general documents wiki).
| Code | Meaning | First step |
|---|---|---|
| TE2111 | Nozzle temperature below the minimum extrusion temperature | Wait for heat-up; if no heat, see TE2509 / TE2515. |
| TE2509 | Unable to obtain nozzle temperature, thermistor may be disconnected | Check hotend cable and thermistor connection. |
| TE2515 | Nozzle temperature exceeds limit, thermistor may be short-circuited | Power off. Check for shorted wires. |
| TE2564 | Nozzle is not heating as expected | Check heater cartridge connection; PID may need retuning. |
| CB2510 / CB2516 | Hotbed thermistor open / short circuit | Inspect bed cable, especially at the flex point. |
| CB2565 | Heat bed is not heating as expected | Check bed heater connector and AC voltage if 110/220V bed. |
| CF0502 / CF0109 | Mainboard fan exception / fan feedback exception | Verify fans are spinning; clean dust. |
| CL2536 / CL2537 | Leveling sensor hardware failure / external disturbance | Clean nozzle and probe; re-run auto-leveling. |
| CX2566 / CY2567 / CZ2568 | X/Y/Z motor drive abnormality | Check belts/leadscrew; verify nothing obstructs the axis. |
| CX2573 / CY2577 / CZ2581 | X/Y/Z homing abnormality | Make sure the axis can reach the endstop without obstruction. |
| FB2844 | PTFE tube may have detached from pneumatic fitting | Re-insert PTFE tube into the pneumatic coupling and lock it. |
| FB2846 / FB2847 | Filament buffer signal abnormal / filament tangled | Untangle the spool; check the buffer sensor. |
| FO2837 / FO2838 | Filament stuck between sensors | Open extruder, clear path, retry. |
| TC2841 / TC2854 / TC2855 / TC2856 | Cutter (CFS) jam or calibration failure | Clear cutter; recalibrate. |
| BM0110 / BM0111 / BM0112 | Motherboard / hotend / hotbed connection failure | Check the relevant cable; re-seat connectors. |
| AC0101 / AC0103 / AC0117 | AI-detected quality / first-layer / warping issue | Inspect print, decide whether to continue. |
| XS3000–XS3002 / XS2000 / XS2001 | Generic system error | Restart the printer; if persistent, contact Creality support with the code. |
How to report an error to support
If a code persists after the first-step fix, the brand's support team will respond fastest if you include:
- The exact error code or message (photo of the screen helps).
- The printer model and firmware version.
- The action you were doing when the error appeared (e.g., "during print, layer 47, ~10 min in").
- Any logs you can export (Creality OS, Klipper, OctoPrint).
- A short list of things you've already tried.
Related articles
MINTEMP / MAXTEMP / Thermistor errors
Thermal runaway
Power panic & power loss recovery
Clogged nozzle and hotend
Sources & further reading
- Creality Wiki — Creality OS Error Code reference
- Bambu Lab Wiki — Knowledge Sharing & HMS code definitions
- Prusa Knowledge Base — Troubleshooting