Just bought a 93 626 for my daughter. It's a 4 cyl with automatic. Car drives great but the air bag light blinks a code 51 or maybe it's a 15. Can anyone tell me what this means or where I can find a good listing of the error codes?The people we bought the car said it sat all winter in the garage and they put in a new battery before putting up for sale. Not sure if this has anything to do with the blinking code. Any help would be appreciated. Thanks!!