What to check, in order
- Check the bumper
Make sure it hasn't come loose from the robot.
- Start on a flat floor
Move Roomba to a flat surface and press CLEAN. Don't move the robot while you press the button.
- Hard reset
iRobot's Error 16 page: hold CLEAN for 10 seconds until all the lights come on, then let go and wait for the tones. Press and release CLEAN, wait 5 seconds, then press CLEAN to start a new job.
- Check your schedule
If you use scheduling, open the iRobot HOME app afterwards and check your schedules are still set.
When to call an engineer
If the message persists, contact iRobot Customer Care.
Good to know
- On the newer Roomba 100/1000, 200/2000, Plus 400 to 600 and Max 700 and 800 series, iRobot's chart gives Error 16 a different meaning: Roomba failed to navigate properly.
Quick answers
What does the Roomba Error 16 error code mean?
Roomba couldn't start cleaning because it's tilted, or its bumper may have come loose.
Can I fix Roomba Error 16 myself?
Very easy (about 5 minutes). Start with: check the bumper; start on a flat floor; hard reset. If the message persists, contact iRobot Customer Care.
Is Roomba Error 16 worth repairing?
Usually free. Starting on a level floor usually clears it.
Checked against
- iRobot: Roomba Error 16
- iRobot: Roomba i series error messages chart
- iRobot: error chart for Roomba 100/1000 to Max 800 series
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.