iRobot Roomba · updated 2026-07-06

Error 18: Failed to dock

What it means

The robot could not return to its Home Base.

The fix

Clear obstacles around the dock, ensure it is against a wall on a hard level surface, and reposition the robot nearby.

Applies to

All series

Source

Official iRobot support article: https://homesupport.irobot.com/s/article/19553

Fix didn't take? Charging-family errors that recur usually mean the battery — see the charging-errors guide. For anything deeper, here's who actually repairs Roombas in 2026, with published prices.