The error B1689 Code is found when the car is diagnosed. Turning off of the cylinders is completed by freeing a synchronizer pin that usually meshes the cam supporter and the rocker arms. The B1689 code determinations the synchronizer pin is free using hydraulic compression which is measured by a devoted solenoid. It is found that the code has different meanings what based on the manufacturer and model number. The dictionary meaning is common for all car engine. It seems that the body of the engine has the main problem and it is easy to solve the problem with less cost.