[car17fan]

try cleaning out the egr valve before buying new, carbon collects inside it. Also one of the more likely sources is the dpfe, check to see if it is metal or plastic. The metal would most likely be original on the vehicle and if it is plastic, it has been replaced at some point. Also make sure to check all the rubber hoses that connect in the egr system, over time they crack, melt or rot and can cause a code in the egr system.