Went to get truck inspected today live in pa. and service light was on> went to autozone and they said it was reading two bad>EGR was one and something about the emission coed that he could not read? he said i would have to take it to the dealer they r the only one with coed? if i get the numbers can i look it up on line? TY

 

Probably code P0401 insufficient flow of the EGR, the most common. I don't know why Azone could'nt read the code, sounds like operator error. Go back and see if someone else will check and post the code and will tell you whats up.