AZ will alwaystry to sell the EGR based off that code and it is more than likely the DPFE sensor as previously mentioned.
From what I have personally experienced moisture gets inside the sensor and causes it to screw up.
There have been many threads on different boards about this.
Also the cost seems to vary by location.
I paid like 38 dollars for my 2000 durtec but people say the vulcan is more expensive.
Anyway it seems the Ford Dealer usuall has the best price on it
When I had my computer reprogammed I just had them turn that off
Mike