Hyundai sonata 2.0t 2015 I think it’s a censor connected to the cooling system to a pipe connected to the throttle body. Not sure what it is but I can’t find it. This censor has a orange rubber around it so it prevents liquids from going inside but, when I check it there is oil inside. I just cleaned them all with censor electrical spray, and I drained and filled my Tran (a little unrelated) but Evap leak censor turns on and goes away; car randomly misfires.
That sensor is a turbo pressure sensor.
If its filling with oil, you may have a problem with the PCV system, or a bad turbo leaking oil into the engine intake.
A bad PCV system can suck oil into the intake, and a bad turbo will leak oil through seals into the intake as well.
No amount of Reddit diagnosis is gonna fix this for you.