Had a amber check engine light pop up this morning, had it scanned at Advance auto parts and the code is P0400 tied to the EGR. I have searched the forum and not finding this to be a common issue. Do I need to order a new EGR valve? The only other fix I found via searching on the Google was a faulty supercharger bypass valve actuator. Anyone else encountered this? Looking for any direction/help to get rid of this and enjoy the ride.

 

I recently replaced the EGR valve in a XKR due to P0400. It is possible it just needs cleaning, but going through all the work of removing it and having to replace the gaskets, it probably makes more sense to replace it. I found one for less than $200 at Rockauto.com. My XJ6 had a EGR fault last year and cleaning took care of it, but that one is on top and easy to remove/replace so it was worth a try.