Need help with mine Leon FR 1.4 140ph

[n1kolaa]

There is low oil presure on ingnition on but not latter, drives normal no shakes normal oil and coolant temerature. Oil presure checked and sensor replaced still same problem.
there si code p334b00 code for turbo actuator
If there is some who can help will be nice. Got it recently.
2013 180k km