the "code" feature on the OBC is an anti theft feature, its kind of like a stock kill switch, it uses a programmed code by the owner to cut the fuel flow from the tank to the engine, that way if somebody manages to hotwire your ignition, they still wouldnt get too far. and the only way to turn it off again is by entering that code again, so this is where you hope you weren't too baked to remember the code lool.. if not, check the fuses by the battery in the trunk, i had one blow on me the first day i got mine and it drove me insane till i found out what it was, had to tow it home and everything lol.. good luck!
1990 325i Sterling Silver Metallic/Black leather.
M52B28 OBD-I W/ S52 Cams, M50 Manifold, SS Headers, Kamotors v5 CAI, Stage 2 F1 clutch w/ 14lb chromoly flywheel, Mark D chip tune.
Bilstein Sports with H&R Race springs + E90 drop hats, F+R Strut bars, '04 330ci Steering rack (3.0 Lock to lock, 13:1), 3.15 Z3 Torsen LSD.
Custom Built BBS RS's 16x8 square.