[kevenj]

It is a common misconception, but a code does NOT tell you exactly what part needs to be replaced - - on ANY car. A "EGR" code could mean that the EGR valve itself is bad, or that the EGR position sensor is bad, or a related relay is bad, or simply a bad connection someplace..... or a clogged exhaust port leading to the EGR valve.... you get the idea.

The code simply tells a qualified technician where to start. There is a reason that a professional technican's scan tool costs $5,000 - - it's much more than a code reader. Then you have to have the knowledge of how the system works or that $5000 tool is little more than a paper weight.

If your car is out of warranty, you would probably be better off to take it to an independent shop that specializes in driveability issues and newer vehicles. Many times the service department at dealerships is only there because it has to be (which is a dumb on their part since a GOOD service department could be quite profitable) while the independent shop has no other source of income; all they do is fix cars.