They are called Diagnostic Trouble Codes (DTCs) There is a list of these codes in the Technical Articles WIKI, above in the TOP BLUE LINE. The number is very important for these codes.
Is this the code "P2263 Turbo/Super Charger Boost System Performance"?
You could have plugged up the EGR when you had that "oop's" a little while a go. Any noise ya never heard before from the engine, it could be a blow turbo gasket.