Isx codes

[hhow55]

Well, to begin with the breathe those doe's not go the valve cover, it connect's to the front cover.
Now the picture you took, is the drain for the crankcase filter housing.
Now listen up, you should have a sensor on the crankcase housing, which may be bad.
So remove the hose that connect's at the top of the crankcase housing, and see if your code will go away.
You may need to turn the key off and on a few time's to cancel the active code
See if you have excessive white blowby, coming from the hose you disconnect from the crankcase housing.