Official support source
Error 6: Drop-off detected
iRobot Roomba · Roomba i Series · reviewed 2026-09-03
What it means
The robot continuously detects a cliff or drop-off.
Safe checks from the manufacturer
- Move the robot to a flat, well-lit area.
- Wipe the cliff sensors with a clean, dry cloth, then press Clean.
Open the official support page
Stop if the error returns
Do not open a battery, charging dock, motor or sealed electrical assembly. Use the manufacturer support route.