I started my 04.5 3500 yesterday morning and the check engine light stayed on. I drove straight to the dealer and had it checked (still under warranty). They told me the code was for the fuel rail pressure (not sure if he said low or high). Anyway, they didn't find anything wrong and told me it was probably dirt in the fuel or something transient that caused it. Is this BS and is it likely to reoccur?

They also did the park/reverse recall while it was in. Since I don't really back up with the door open, I don't think that will be a problem for me. Any other problems with this?