The meaning of the B1309 Code differs from car to car. That is why, it is necessary to know the model and manufacturer of the car. The meaning of the code says that problem is related to body of the engine and no component is necessary to change. While fuel consumption was increased, then acceleration was extremely negotiated, and the loss of engine vacuum led to a hazardous loss of decelerating support when the B1309 code system was in 4-cylinder mode. Moreover, to these issues, though the corporation planned a hydraulically organized system that could be transferred from within the car, the version they applied had to be transformed in the engine section using hand tools.