Nintendo Switch console error codes: internet connection and network setup codes

Switch internet and network codes: where to start

Start with the checks that cover most cases: restart the console, restart the router, move the Switch closer to it, and try the console's connection test in System Settings, Internet. If another device works on the same network, the fault is the console's connection; if nothing works, call the provider. Try the router's 2.4 GHz band if the console cannot see the 5 GHz one, and connect the console to a phone's hotspot to test whether the problem is the network itself.

Because many of these codes are really about the home network, a few steps cover most of them: restart the console, restart the router and modem, move the Switch closer, and test with a phone hotspot to see whether the network or the console is at fault. A wired connection through a LAN adapter with the dock removes Wi-Fi as a variable. Check that the router is not blocking the console with a firewall or a security setting, and update the console software. Write down the full code before searching, since the digits after the dash narrow it down.

If only one network fails, forget it in the console's internet settings and enter the password again, and try a different DNS setting if the router's is slow. A code that follows the console to every network points to the console's hardware.