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Yes,

When your car is run overfilled with oil it can damage the Air Oil Separator, then oil gets into the intake fouling the MAF, fouling the throttle body, fouling the plenum, and finally fouling the plugs. Think Exxon Valdez inside your intake.

The new codes you list tell us your car is running lean on both banks and the DME is trimming the mixture but has reached it's trimming limits. Often caused by a fouled MAF or damaged AOS.

Time to remove the intake and throttle body for inspection and a thorough cleaning. Clean or replace the MAF, inspect the AOS for damage, and replace parts as needed. Once she is running clean again the plugs will probably clean up too. There are good DIY for all of this on Renntech.org.

Sorry this turned into such a hassle. I also had to learn a few things the hard way on this car. Now I use the Bentley manual or print out the helpful DIY from other owners before diving into Porsche service waters. Good luck!