Updated 26 October 2015

NW-31205-1 PS4 Error Code

Network connection is unstable or too weak to reach the PlayStation Network server.

  1. Check the connection status of the PlayStation 4 System in [Settings] > [Network] > [Test Internet Connection].
  2. Try the following:
  • Other devices on your network might be using a large amount of bandwidth. Wait until they have finished.
  • Check that your router and modem supports PlayStation 4. Contact your internet service provider for details.
  • Reset your local network connection by powering off your modem or router and wait 5 minutes before turning it back on.
  • Update your router's firmware.  Please contact your router manufacturer or Internet Service Provider (ISP) for assistance if required.  
  • If you are using a Wi-Fi connection, place the PS4 and the router closer together, and make sure there are no obstructions between them.
  1. The following port numbers are used to connect with the PlayStation Network servers using the Internet. Make sure they are not blocked by the router.
    TCP: 80, 443, 3478, 3479, 3480
    UDP: 3478, 3479
  2. If you have been using a specific DNS server, go to [Settings] > [Network] > [Set Up Internet Connection] > [Custom] and change the DNS settings.
  3. If you're still experiencing difficulties, please try again later as the server may be experiencing high traffic.

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