Can't play Mario Kart 8 Online

[Martroid98]

I'm getting the errors 118-0502 and 118-0516 all of the time, when I try to play MK8 Online after I've chosen my character and my kart. Everything else works (E Shop, Miiverse, etc.). Please help me. I retried it the whole day and it still doesn't work.

Update: I'm getting error 118-0519, too.

Update 2: Sometimes I get into the course selection, but the connection crashes then.

Update 3: Error 118-0521, too.

[Martroid98]

I may found the problem after searching in the internet. Mario Kart 8 was released at 30th May. The servers may be overloaded and are crashing fast.

Message from Nintendo (Translated):

Spoiler: show

Currently our servers are temporarily unavailable due to overload, so it may occur also various errors. In this case you should try again to connect to a later date.

I can get into the course selection with other players sometimes, so my internet connection doesn't trigger the problem. I think we just have to wait because the E-Shop had the same problem at christmas.