The B1499 Code comes from the diagnosis of the engine and you need to know the meaning of the engine if you want to solve the problem. The dictionary meaning is also important to know for identifying the problem properly. B means Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 means MFG – Manufacturer Specific. 4 means Transmission. 9 means Crankshaft Position Sensor Circuit Performance and 9 means Kick-Down Switch Failed Short. Due to the body problem of the engine, the code comes with B. It is not necessary to change any component of the engine.