If you're within the factory warranty, I don't know of anything that could cause you to have to pay for an emissions problem out of pocket. Unless of course you destroyed something physically..
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So, as far as resetting it..you can get a code reader and use that to reset OBDII codes. I would assume that would clear the error message for you.
Hopefully someone else has more info for you.
All requests have been mailed, with the exception of a few this last week. If you have requested a sticker but haven't received one let me know!
I still have plenty left.
Also, the BFG's are one of the better looking tires and really hard to be the performance from what everyone says. They might be my next tire. Nitto just released the "Ridge Grappler" and it looks great as well.
I always use the BLUE DEF brand but DEF is all the same, or it should be at least. If the code comes back, definitely make an appointment at the dealer. Otherwise just drive the EcoDiesel and enjoy it!
Code search says it's related to the DEF tank. Unfortunately not much we can do from here. Hopefully the dealer has some good info/fixes for you. Keep us updated!
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