Engine code PO 400

I got the check engine light on, so i checked the computer and it,s giving me PO400. I understand it's the EGR valve. The thing is I don't know where its at. Can anyone help me and tell me where I can find it? Thanks. Oh yeah it's a 95 Mercedes C280. Thanks

I've had that code come up twice for my 95 C280. Both times I reset the code and it staid away for a long time time. Try resetting it and see what happens. I think its on the passenger side toward the firewall. Other M-B forums say it may be worth cleaning the valve and the lines before replacing the valve. That will be my next step if the code keeps resetting.

While looking straight at the throttle body, yhe EGR valve will be located to the right approximately 5 inches. It is circular in shape and has a tube connected to it at the "10 o'clock" position. The rubber tube is about an inch and a half long. ............check out : benzworld.com

If your car has the inline 6 cylinder motor, then the egr valve will be located between the firewall and the #6 intake runner. Which is the intake runner closest to the firewall itself.