Goods Scene Troubleshooting
iRobot Roomba 800 Series – Cannot return to Home Base or starting position — Error 18
On Roomba 800 Series, Error 18 indicates that the robot cannot return to the Home Base or its starting position.
Issue meaning
What this issue means
On Roomba 800 Series, Error 18 indicates that the robot cannot return to the Home Base or its starting position.
Start here
First checks
Check that the Home Base is powered and accessible, remove obstacles from the return path, and clean the relevant charging contacts and docking area before retrying.
Inspection
Area to inspect
Home Base position and power, return path, docking area and charging contacts.
Goods Scene guidance
What to do next
Rule out dock placement, obstacles and dirty contacts before diagnosing docking sensors or navigation hardware.
Practical guidance is kept separate from manufacturer wording.