The Error 15 error on your Sonos Soundbar means the system has failed to connect to your home network or lost communication with other Sonos products in your household. This is usually a network or Wi-Fi issue rather than a fault with the soundbar itself, and it can often be fixed by restarting your router and Sonos devices in the right order.

Error code ERROR 15
Meaning Network connection failure between the soundbar and your Sonos system or router
Severity Medium — sound and app control stop working until resolved
Time to fix 10–20 minutes
Tools needed None (smartphone with Sonos app recommended)

What the Error 15 error means

Error 15 appears when your Sonos Soundbar cannot maintain a stable connection to your Wi-Fi network or to other Sonos speakers in a group. It’s a communication error, not a hardware failure, so the soundbar’s speakers and amplifier are not damaged. The most common trigger is a router that has changed settings, dropped connection, or is too far from the soundbar.

Common causes

  • Router restarted or changed its network name/password recently
  • Soundbar is too far from the router or has weak Wi-Fi signal
  • Temporary internet or ISP outage affecting your home network
  • Router firmware update causing a temporary mismatch with Sonos settings
  • Too many devices connected to the same Wi-Fi band causing congestion
  • Sonos app or soundbar firmware is out of date

How to fix the Error 15 error

  1. Restart your router: Unplug it for 30 seconds, then plug it back in and wait for it to fully reconnect before testing the soundbar.
  2. Power cycle the soundbar: Unplug the soundbar from the mains, wait 30 seconds, then plug it back in and let it reboot fully.
  3. Check your Wi-Fi signal: Move the soundbar closer to the router temporarily, or check if other devices in the room have connectivity issues too.
  4. Update the Sonos app and firmware: Open the Sonos app, go to Settings > System > About My System, and update if a new version is available.
  5. Reconnect the soundbar to your network: In the Sonos app, use Settings > System > Networking to remove and re-add the soundbar to your Wi-Fi.
  6. Factory reset as a last step: If the error persists, reset the soundbar following Sonos’s official reset steps and set it up again from scratch.

FAQ

Will Error 15 delete my Sonos settings?
No, a normal restart or reconnect won’t erase your settings. Only a full factory reset will remove saved network and speaker group settings.

Can Error 15 happen with a wired connection?
Yes, though it’s less common. A faulty ethernet cable or router port can still trigger this error even without Wi-Fi involved.

Is Error 15 covered by warranty?
Error 15 is a network issue, not a defect, so it isn’t something warranty repairs would fix. Correcting your network setup usually resolves it.