What to check, in order
- After a battery swap, carry on
If it appeared after you refitted the battery, nothing is wrong. Press CLEAN.
- Reboot
j series: hold the button for 9 seconds; the light ring swirls white for up to 90 seconds while it starts. i and s series: hold the power button for 20 seconds off the dock.
- Reseat the battery
Take it out, wait 10 seconds, put it back and test again.
- Reset the map
In the app, go back to an earlier Smart Map from your cleaning history, or delete your Smart Maps and map again.
- Factory reset
As a last step, reset the robot from the iRobot HOME app.
When to call an engineer
If it appears on every cleaning job even after these steps, contact iRobot Customer Care.
Quick answers
What does the Roomba Error 15 error code mean?
Roomba had an internal error and was able to deal with it itself. It's expected after the battery has been taken out and put back.
Can I fix Roomba Error 15 myself?
Very easy (about 10 minutes). Start with: after a battery swap, carry on; reboot; reseat the battery. If it appears on every cleaning job even after these steps, contact iRobot Customer Care.
Is Roomba Error 15 worth repairing?
Not a fault. A one-off Error 15 is the robot recovering by itself.
Checked against
- iRobot: Roomba Error 15
- iRobot: Error 15, Roomba j series and Combo 10 Max
- iRobot: rebooting your robot, all Roomba and Braava models
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.