Jaguar x type check engine light and egr fault code even after replacing egr.
I have a 2.0 diesel x type that threw up a check engine light with egr related codes. The egr was really clogged with carbon so I guessed it might have been stuck open. I put in a new egr and the light went away for a few miles then came back. I then took apart the intake manifold to clean to make sure there was absolutely no blockage to air flow that could be causing the fault. Again the light went away then a short while later it again came back. The car will also go into limp mode if it revs above 3 to 4k but its semi random. Sometimes itll be fine others it won't and will go into limp. Im really at a loss as to whats causing it. Its like a really weird phantom fault at this point. The egr it has now is new and the intake manifold is clean. There's absolutely nothing egr related now that should be causing the engine light and limp mode.