The B2159 Code emerged when the engine code reader identifies the error in the engine at the area of the B2159. So, the engineer of the auto repair can identify the real reason of the code comes. It important to read the manual of the car what let the engineer know the manufacturer name and model number of the car. It becomes easier to get the real meaning of the code. Now fix the problem from the engine and you have to follow the dictionary meaning as well as to get the basic meaning if it is necessary to know.