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LIDAR Failed

Bambu Lab 3D Printer

Severity: Moderate

Source: OnlyErrorCodes.com — Every error code. One place.

Bambu Lab LIDAR Calibration Failed — Fix

What Does This Error Mean?

The Bambu Lab Micro Lidar calibration failure means the sensor could not get reliable readings from the build plate surface. The most common fixes are cleaning the Lidar lens on the toolhead with a dry cotton swab, cleaning the PEI plate with IPA alcohol, and ensuring the printer is in a room with consistent lighting — bright direct sunlight on the print bed can interfere with the optical sensor.

Affected Models

  • Bambu Lab X1C
  • Bambu Lab X1E
  • Bambu Lab P1S
  • Bambu Lab P1P

Common Causes

  • Micro Lidar lens on the toolhead is dusty or contaminated
  • PEI build plate is dirty with oils or filament residue
  • Bright direct sunlight or strong ambient light interfering with the Lidar sensor
  • Incorrect build plate type selected in software for the plate physically installed

How to Fix It

  1. Locate the Micro Lidar sensor window — it is a small round lens on the side of the printhead assembly. Clean it gently with a dry cotton swab.

    Do not use alcohol or any liquid on the Lidar lens. A dry wipe is sufficient and avoids leaving residue that could further obstruct the optical path.

  2. Clean the PEI build plate with 90%+ IPA alcohol. Fingerprint oils on the plate surface scatter the Lidar beam and prevent accurate height measurements.

  3. Move the printer away from direct sunlight or draw any blinds near the printer. The Bambu Lab Micro Lidar is a visible-light sensor and strong ambient light can saturate it during calibration.

  4. In Bambu Studio or on the touchscreen, confirm that the build plate type selected (smooth PEI, textured PEI, cool plate) matches the plate physically installed in the printer.

    Each plate type has a different surface reflectance. Selecting the wrong plate type causes the Lidar to use incorrect reference values.

  5. If LIDAR failures persist after all of the above, run a full calibration reset: Settings > Calibration > Calibrate All. This forces a fresh baseline scan.

Frequently Asked Questions

Does the Bambu Lab P1P have a Lidar sensor?

No — the Bambu Lab P1P does not include the Micro Lidar sensor. Lidar-based calibration and first-layer scanning are features of the X1C, X1E, and P1S models. The P1P uses a strain gauge-based ABL (automatic bed leveling) probe instead.