Turbocharger?

[Ravenwood]

Turbo looks good, actuator passes, hyst. Test passed, IMAP sensor voltage is good, sensor reads as it’s should, charge air system has been pressure tested and passed.
Only thing I haven’t done is remove it and see if it’s dirty. The intake manifold is clean as a whistle so I don’t think the sensor would be dirty.
I haven’t checked the line from the exhaust manifold to the back pressure sensor.
Made a trip and it did it again at lower rpms.
I did notice that the intake manifold pressure data valid but below normal range-least severe level code 6864 came back and that seems to be the cause as far as I can tell. Runs fine before
I’m just about ready to try the old engine killing file back in to see if it happens with it.