iRobot Roomba Error Code 68: How to Fix It

Medium 15-45 minutes Medium Severity Verified June 2026
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Error Code
68
Brand
iRobot Roomba
Product Type
robot_vacuum
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
15-45 minutes
Roomba Error Code 68 indicates a fault with the robot's LIDAR (Light Detection and Ranging) sensor, which is the spinning turret on top of the unit that maps your home and navigates around obstacles. When this sensor malfunctions or cannot spin freely, the Roomba halts cleaning to prevent it from bumping into walls or getting stuck. In many cases, this error is caused by dust, debris, or a physical obstruction blocking the sensor turret — and can be resolved with a thorough cleaning.
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Tools You'll Need

How to Fix Error Code 68

  1. Power Off the Roomba

    Never attempt to clean or service the Roomba while it is powered on or charging. Power it off fully before proceeding.

  2. Inspect the LIDAR Turret for Obstructions

  3. Clean Around the LIDAR Turret

    Do not use water, alcohol, or household cleaners directly on the LIDAR lens or turret. Use only a dry or barely damp microfiber cloth to avoid damaging the optical components.

  4. Check for Hair Wrapped Around the Turret Base

  5. Reboot and Run a Test Clean

  6. Perform a Factory Reset (If Error Persists)

    A factory reset will erase your Roomba's saved maps and settings. Back up or note your preferences in the iRobot HOME app before resetting.

  7. Update Firmware via iRobot HOME App

  8. Replace the LIDAR Sensor Module (Advanced)

    Opening the Roomba chassis will void any remaining manufacturer warranty. Ensure the unit is fully powered off and disconnected from the charging base before disassembling. Handle the ribbon cable gently — it tears easily.

Parts You May Need

LIDAR sensor module (laser distance sensor turret)
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LIDAR ribbon cable
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LIDAR sensor module (laser distance sensor turret)
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LIDAR ribbon cable
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LIDAR sensor module (laser distance sensor turret)
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LIDAR ribbon cable
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When to Call a Professional

If Error 68 persists after thoroughly cleaning the LIDAR turret, performing a factory reset, and updating the firmware, the LIDAR sensor module has likely failed mechanically or electrically. At this point, contact iRobot Support directly — if your Roomba is still within its 1-year limited warranty (or extended warranty period), iRobot may replace the unit or the sensor at no charge. If it is out of warranty, you can contact iRobot for a paid repair, seek a local electronics repair technician experienced with robot vacuums, or attempt the LIDAR module replacement yourself using a compatible replacement part. Do not continue running the Roomba with a faulty LIDAR sensor, as it will be unable to navigate safely.

Frequently Asked Questions

What does Error Code 68 mean on a Roomba?
Roomba Error Code 68 means the robot has detected a fault with its LIDAR sensor — the spinning turret on top that uses a laser to map your home and detect obstacles. The error typically occurs when the turret is blocked by debris, hair, or dust, or when the sensor itself has failed mechanically or electronically.
Can I fix Roomba Error 68 myself without a technician?
Yes, in most cases. The majority of Error 68 occurrences are caused by dust, pet hair, or debris jamming the LIDAR turret. A thorough cleaning of the turret and its lens, followed by a reboot, resolves the error for most users. If the error persists after cleaning and a factory reset, the sensor module may need replacement, which is a more advanced DIY repair or a job for iRobot support.
Why does my Roomba keep getting Error 68 after I clean it?
If Error 68 returns repeatedly, there are a few possible causes: hair and debris are re-accumulating on the turret quickly (consider cleaning the area around the Home Base more frequently), the LIDAR turret motor is wearing out and struggling to spin, the ribbon cable connecting the sensor is damaged or loose, or the sensor itself is defective. Try a factory reset and firmware update. If the error keeps coming back, the LIDAR module likely needs to be replaced.
Does Error 68 only affect certain Roomba models?
Error 68 is specific to Roomba models equipped with a LIDAR sensor, primarily the i series (i3, i4, i6, i7, i8), j series (j7, j7+), and s series (s9, s9+). Older Roomba models that use camera-based navigation or simple infrared sensors do not have a LIDAR turret and will not show this error.
Will iRobot replace my Roomba if it has Error 68?
If your Roomba is within its 1-year limited warranty period and the LIDAR sensor fault is not caused by physical damage or misuse, iRobot support may replace the unit or repair it at no cost. Contact iRobot Support at support.irobot.com with your serial number and a description of the error. Out-of-warranty units may be eligible for a paid repair or a discount on a replacement robot.

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