Not every online game can ever remain stable, especially if players consistently play on it, or the developers need to take it down for an update. Some players may experience this with Animal Crossing: New Horizons, with the Error Code: 2219-2502.
For those attempting to connect to the online game, you may encounter the Error Code: 2219-2502. It says, “This error code indicates an error occurred when connecting to the service, likely the result of a temporary service outage or a high volume of user access.”
Unfortunately, you’re encountering this error code with Animal Crossing: New Horizons, there’s not much you can do. You may need to put the game down or attempt to play the game offline to not connect to any of the online services. The error could be happening because the Nintendo servers are having trouble, they’re down, or there are too many players attempting to connect to the game.
Your best bet is to step away from the game and play something else for the time being. You may want to return to the game in an hour or so to see if there’s any progress, and the servers have been repaired.
If you continue to experience this for an extended period, make sure to investigate the Network Maintenance Information/Operational Status page Nintendo has set up for situations like this. You may learn additional details about why you’re receiving this error code.