[satyakibmw320i]

I have a BMW 320i and I see the below fault codes.
What spare parts do I need to fix these errors:

002B62 - DME Camshaft sensor, intake
004FBD - EGS Ratio Monitoring, gearshift 5-4
002F44 - DME Electronic car immobilization system.

The car has done 58000 kms as of now.
Also can someone tell me which one of them is critical ?

Here is a snapshot of the error codes:


Thanks,
Satyaki