Took some photos during a recent clean of the intake manifold flap valve V157 which was not as bad as others I've seen. The nozzle coats the valve causing reduced movement or even sticking and results in the glow plug light flashing and limp home mode. Logged codes in address 01 include P012100 and or P211100 and or P211200. While your valve is soaking in your solution of choice take the time to remove the EGR nozzle to the plastic inlet manifold and rotate it 180 degrees. The nozzle b