CATERPILLAR/ PERKINS C4.4 EGR (NRS) temporary fix for derate 2791-7code

code 2791-7 EGR Valve Control : Not Responding Properly.
this is a just a temporary fix until your able to replace the EGR valve, the code should clear on it's own. make sure there is nothing loose inside of the manifold before installing.

[@Abbadon2001]

This looks like the EGR off a C6.6 or C7.2, are you sure its from a C4.4?