ESP/BAS stands for Electronic Stability Protection/Brake Assist System. There is a pulse registered at each wheel when the car is being driven. If a sensor isn't working properly, it will set this code. You will need to have the computer scanned to determine where the problem is originating.
Let me know if you have other questions. Also, if you have experienced any other problems since the light came on?
Monday, December 7th, 2009 AT 10:34 PM