iRobot · Robot Vacuum Serious
Error 15 — Internal communication error
Robot detected an internal electrical or firmware fault. Often resolved by reboot but can indicate failing electronics.
- Keep using it?
- Limited use only
- DIY difficulty
- Moderate
- Verified against
- homesupport.irobot.com ↗
How to fix it
- Perform a reboot: press and hold CLEAN for 20 seconds (i/j/s series) or 10 seconds (600/900 series) until the robot powers down.
- Wait 10 seconds, then press CLEAN to power back on.
- If error returns, perform a factory reset via the iRobot HOME app (Product Settings → Remove/Factory Reset).
- Check the iRobot HOME app for firmware updates and apply.
- If error persists after reset and firmware update, the robot likely needs replacement or warranty service.
Why it happens
Typical signs: 'Error 15' voice prompt · Robot may not respond normally to buttons · Random shutdowns
- Firmware glitch Temporary software issue resolved with a reboot.
- Loose internal connector Vibration loosened a ribbon cable or wiring harness.
- Failing logic board Component on the main PCB is failing.
More iRobot robot vacuum codes
Charging Error 2 Charging Error 2 — Battery not detected Charging Error 3 Charging Error 3 — Battery won't charge Charging Error 5 Charging Error 5 — Charging system fault Error 1 Error 1 — Side wheel stuck / off ground Error 10 Error 10 — Drive wheel not turning Error 11 Error 11 — Bin full or airflow blocked
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: homesupport.irobot.com.