Charge Pressure Deviation help please.

Car keeps throwing a "P1550" charge pressure deviation. From what I understand this is due to vacuum lines or a small turbo controller valve? I am in the process of checking all the lines for leaks and all that good stuff. I replaced the vacuum line in the ECU when I bought the car because it was blown out and old going to check to make sure that didn't come off or something.

It only triggers once it reaches about 34 or 35 PSI if I keep the revs low then it doesn't trigger it.

Any suggestions or help is appreciated.

Thanks

Got it. TC had a vacuum line undone. Was hiding under the air box.