iRobot Roomba Error Code 73: How to Fix It

Q: Will a factory reset fix Roomba Error 73?

In the majority of cases, yes. Error 73 is a software issue caused by corrupted firmware or a failed update. A factory reset clears the corrupted data and, when followed by a fresh firmware install via the iRobot Home app, resolves the boot loop permanently. If the error returns after a reset, a failing battery or hardware fault may be the underlying cause.

Q: Will I lose my Roomba's maps if I factory reset it?

Yes. A factory reset erases all stored smart maps, room labels, cleaning history, schedules, and Wi-Fi credentials saved on the robot. After resetting, you will need to reconnect it to Wi-Fi through the iRobot Home app and allow it to re-learn your floor plan over several cleaning runs.

Q: Why does my Roomba keep restarting in a loop?

A Roomba stuck in a restart loop (Error 73) is almost always caused by corrupted firmware — often from an interrupted software update or a power loss during an update. Less commonly it is caused by a battery that cannot supply consistent voltage during the boot sequence. Start with a force restart, then a full factory reset, and finally consider battery replacement if the problem persists.

Q: How do I factory reset a Roomba i7, i3, or j7?

For Roomba i, j, and s series models, press and hold the CLEAN button for approximately 20 seconds. You will see the light ring on top spin white and hear a tone when the reset begins. Release the button and wait for the process to complete — it may take up to 2 minutes. The Roomba will then be ready to set up as a new device in the iRobot Home app.

Q: Can a bad battery cause Roomba Error 73?

Yes. A degraded or failing battery that cannot maintain stable voltage can prevent the Roomba's processor from completing its startup sequence, causing a continuous boot loop. If your Roomba is several years old, goes through extended periods without charging, or the battery drains unusually fast, replacing the battery is the recommended next step after a factory reset has not resolved the issue.

Abstract

iRobot Roomba Error Code 73 indicates that your Roomba is caught in a boot loop — meaning it repeatedly restarts without ever fully loading its operating software. This is usually caused by corrupted firmware, a failed software update, or a deep software glitch that a normal restart cannot resolve. The primary fix is a factory reset, which wipes the device back to its original settings so it can start fresh.