Receiving:
P04DB (crankcase ventilation system disconnected)
P051B (crankcase pressure sensor circuit range/performance)

On a 2015 Ford Edge. Not quite sure where to start, wondering if anyone here had advice or experience.
Just changed the oil, no change. Definite smell when the vehicle is running. Not a burning smell but an oil or exhaust smell.
Haven't checked for anything disconnected under the hood yet.
Aside from checking for anything obviously in need or replacement I think I'm starting with replacing the PCV hose.
And maybe the oil pressure sensor or equivalent with part: "engine oil pressure switch cm5z9d29ob"

 

Some late model Fords have "Heated PCV Valves."

When you find the PCV valve , if it has wires attached it is electrically heated and needs to be checked to see if it is stuck.open.