Error 15 Serious Moderate DIY

iRobot Robot Vacuum Error 15 — Internal communication error

iRobot Robot Vacuum · Error code Error 15

What Error 15 Means

Robot detected an internal electrical or firmware fault. Often resolved by reboot but can indicate failing electronics.

Symptoms

  • 'Error 15' voice prompt
  • Robot may not respond normally to buttons
  • Random shutdowns

Common Causes

1
Firmware glitch

Temporary software issue resolved with a reboot.

2
Loose internal connector

Vibration loosened a ribbon cable or wiring harness.

3
Failing logic board

Component on the main PCB is failing.

How to Fix It

  1. 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.
  2. Wait 10 seconds, then press CLEAN to power back on.
  3. If error returns, perform a factory reset via the iRobot HOME app (Product Settings → Remove/Factory Reset).
  4. Check the iRobot HOME app for firmware updates and apply.
  5. If error persists after reset and firmware update, the robot likely needs replacement or warranty service.

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

All iRobot codes → All robot vacuum codes →

Verified against manufacturer documentation: homesupport.irobot.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.