The car engine P1754 Code is an important thing and the main problem is powertrain. If you do not know how to fix the car engine or how to solve the car, then you should depend on the automobile engineer. However, the automobile engineer knows well how to test and fix the car engine. Do not solve the car engine in wrong way or try to fix the car engine by an immature automobile engineer. Deactivation process of cylinders is realized by releasing a synchronizer pin that generally interlocks the cam follower and rocker arms. Solve the problem of the car engine as soon as possible.