Hi Victor,
I show a 2.5L motor for that application. The code means insufficient Exhaust Gas Recirculation.
The system is composed of an EGR valve, computer controlled EGR vacuum regulator, which operates the valve, and a DPFE sensor that detects exhaust gas flow through the valve to feedback information to the computer. So...this is a closed loop control system, meaning that the computer controls the device and receives response information back.
The failure could be in many areas. Hoses, plugged ports, defective sensor or control device, etc. Unless you are a pro, probably all you can do is make sure all the hoses are plugged in and routed correctly. There should be a diagram under the hood.
Here are a couple of links:
This one will help you find a qualified professional to take care of this. This would be the most cost effective option. Shops on this engine are members of the International Automotive Technicians Network:
http://www.iatn.net/dir/search.asp If you still want to tackle this yourself, you need information. You can get access to systems information on line. While this may not help you to diagnose the issue, it will give you an appreciation for the complexities of your ride and serve to illustrate the value of a pro in this situation. Here is a link to ALLDATA DIY Online:
http://www.alldata.com/vehicle_owner Hope this helps