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That first code is the VGT actuator is not responding or failed. Are you having any power issues at all? If so, I would have the actuator pulled off and see if it id bound up or if the turbo is bound up. Hopefully the turbo is not bound and only the actuator needs to be replaced.
The second code is EGR Differential Pressure - mechanical system not responding or failed. That is all the EGR. Now if the EGR is not responding, it can cause this for the EGR valve would open, but not send enough air through for the sensor to pick it up. It can also have it's own issue as well and the EGR being bad. I would correct the issue with the turbo first since the second code can be from the first. If the first is corrected and the code is still there, then the EGR needs to be checked after.
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