WiFi Connection Failed
Bambu Lab 3D Printer
Severity: MinorWhat Does This Error Mean?
WiFi Connection Failed means the printer cannot connect to your wireless network. The printer only supports 2.4 GHz WiFi. Make sure your router's 2.4 GHz band is enabled and the password is correct.
Affected Models
- Bambu Lab X1 Carbon
- Bambu Lab X1
- Bambu Lab P1S
- Bambu Lab P1P
- Bambu Lab A1
Common Causes
- Router set to 5 GHz only — printer needs 2.4 GHz
- WiFi password entered incorrectly
- Printer too far from the router
- Router MAC filtering blocking the printer
- WiFi network name (SSID) contains special characters
How to Fix It
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Make sure your router has 2.4 GHz enabled.
Bambu Lab printers only connect to 2.4 GHz WiFi, not 5 GHz. Check your router settings if you have a dual-band router.
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Double-check the WiFi password.
Passwords are case-sensitive. Re-enter it carefully using the printer's touchscreen.
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Move the printer closer to the router or add a WiFi extender.
3D printers are often in garages or workshops far from the router. A WiFi extender can improve the signal.
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Use a simple SSID name without special characters.
Some printers have trouble with WiFi names containing spaces, emojis, or special characters.
Frequently Asked Questions
Can I print without WiFi?
Yes. You can print via SD card or USB on most Bambu Lab models. WiFi is needed for remote monitoring via the app and firmware updates.
Does the Bambu Lab printer support 5 GHz WiFi?
No. All current Bambu Lab models only support 2.4 GHz WiFi. This is common for IoT devices because 2.4 GHz has better range.