Climatronic display oil pressure?
 

I know about holding the two buttons to display all that stuff but I've read how there is a second set of codes to be accessed that will display oil pressure? Anyone know how or even if possible to do this?

theres a writeup on audiworld with all the ways

The only stock readings you can get for oil pressure are using a vag com and vagging instrument cluster, this will give you the status of the oil pressure SWITCH (so it either says pressure ok, or pressure low).