Well it just might not be in WIS. It isn't where its supposed to be and that is Vol 3 of the Engines DM (diagnostic manual). That volume doesn't come up on my WIS.
I do have a paper version and it says O2 sensor for code #2 and EGR for code #5. The next step in diagnosing #2 is to consult the HFM module.
Bosch Master, ASE Master, L1
33 years MB technician