Sometimes it's the airbag sensor under the passenger seat, atleast so I've heard. Unplug it and clean it out and plug it back in.

Other issue, I have no idea.


Exhaust wise, everything will sound bad with the DoD/AFM active, it'll sound like a helicopter out back and drone on the open road with only 4 cylinders working. You can remove the DoD/AFM with a aftermarket tune/custom tune with a tuning software if you wish. I'd suggest reading on that if it's something you wish to do.