Fixing the 003–1101 error on the Nintendo 3DS console family


A photo of a Nintendo 2DS showing a Mario Kart 7 lobby.

After a long time without playing online on my 2DS, I tried to connect the device to my home wireless network. Everytime I would enter the password, I got the 003–1101 error. The documentation on Nintendo's website was not that great, basically telling me that the problem was me entering the wrong password.

After searching a bit, I found this reddit thread. According to the author, the solution is simply to change the router 802.11 mode to b/g/n mode.

I changed and voilá! 2DS connected.

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