yep, time to get your hands dirty.
The only pita part in this is having to remove the intake manifold to get to one of the valves.Other than that, its a really easy swap job.
even if the dealer covers it under warranty, it will break down again. Mine did. When it does, your warranty may run out and you're smack with a $1300 bill to replace it. Best thing to do is to disabled the code or start learning how to remove the intake manifold yourself, and do your own labor.
It may not be a bad thing to remove the manifold. Atleast you can clean out the carbon that has accumulated inside and give it a nice fresh coat of paint.