My engine light came on with a trouble code of p0404 which is the egr valve. The light has came on and off 3 or 4 times in the last couple days. Now I have heard stories that sometimes you can replace this valve and the light still comes on. Has anyone had this problem. I only ask cuz I can only find this part from the dealer and its 100 bucks. Don't want to replace it if its not going to fix the problem.
'05 Ram 4.7L