Its has happened to me, and the dealership confirmed for me because I wanted to be 100% sure.

 

yea i debated on getting those e3 plugs

but i went with ngk in my 00, thats what i heard was the best in new jeeps

 

Just a update, I had the light come on due to a elbow on a vacuum hose to the intake manifold being old dry rotted and popped off. replaced it and removed the code and we have been good to go ever since. Thanks for the help