There are several bulletins on issues with that motor. (only 3 years usage in USA)

1 bulletin pertains to "burnt valves"
others point to issues with oil in wiring harness.
also a service campaign to replace the crankcase breather hoses.

AND yes that engine does have a TRUE PCV valve that must close under boost OR oil will be pressured into the engine & also into the air intake area & damage the air mass sensor.

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