Fault code 39 EGR not responding. STUMPED!!

Hi, truck came in with three 39 codes, two vgt codes and egr not responding. I pressure tested egr cooler, cleaned delta-p sensor lines, as well as the end of the temp I also replaced the EGR valve assembly. I dont have any exhaust leaks in the system. My delta-p counts look normal, around 111 usually. EGR temp is acting normal. Code 39 147/7 EGR not responding became active on the highway, EGR stays at 100% drove back to shop, switched ignition off and restarted engine code is no longer active and EGR will drop and fluctuate with throttle position. Im stumped lol. Also ECM fuses look good, as well as battery terminals and ground posts. BTW this is DDEC V, has hydrolic EGR , no egr V-POD.

 

Truck also has plenty of power, runs fine and makes good boost. Jakes with VGT works too.

 

I have not changed the vpod, The The VGT seems to be functioning properly.

 

The vgt vpod? This doesn't have a egr vpod

 

Yes but why would that be causing egr not to respond

 

Okay. My vgt does seem like it's always around 70% then egr likes to be at 100 unless you snap the throttle bringing it down to 50%