[bhb399mm]

could be any number of things, you can't know what tripped it until you have it looked at by a dealer or someone else who can use a VAG-COM diagnostic tool to pull the fault code.

flashing check engine light = drive to the dealer or have it towed there right away

steady on CEL = okay to drive but get it checked out soon to be safe.

 

[bhb399mm]

depends on the gas station.... call and ask if they have VAG-COM diagnostic tools. some standard OBD-II universal diagnostic tools wont pick up on the right codes.

any independent european car mechanic would have the right capabilities tho.