The B1516 Code connected with the engine problem and it is important to know the correct meaning of the code. The code has dictionary meaning and this dictionary meaning helps to know the problem. The dictionary meaning is B means Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 means MFG – Manufacturer Specific 5 means Computer and Auxiliary Outputs 1 means Low Coolant Circuit. 6 means Cruise Control System – Vehicle Accel Too High. Take the care to professional for solving the problem and you should take a test drive after fixing the problem to identify the problem is solved or not.