I have had this code on for about 3 months now. Recently cleaned the intake real good and the code keeps popping back up after I erase it. Pulled the intake again and made sure the EGR port was clear and while I had the intake off I adjust the valves. I am getting the proper voltage at the plug but just wanna make sure my EGR is bad before I drop $150 on a new one.

Thanks

 

It's easier if you have a decent vacuum pump to work with, but the guy in this video is demonstrating a basic way to check if the EGR valve is shot.