ERROR CODE P0304 Cylinder 4 misfire NEED HELP PLEASE N THANKS

[Sarah Fram]

So i did some research and apparently theres tons of issues with this left cylinder head..its a 2013 200 with the v6 pentastar and ive read that there have been extended warranties added to certain 2011-13 200s. I called the dealership and she said it was only certain vin #'s and mine wasnt one of them.....but Ive read that Chrysler extended the warranty on the left cylinder head for ALL v6 pentastars from 2011-2013. What do i do? How do I verify this? Anyone else have this issue? Please help....thank you so much in advance