The engine U1261 Code is very important thing and the car manufacture set up a meaning of the code what is necessary to follow for fixing the car engine. If wrong meaning is followed, it becomes difficult to solve the car engine problem. By releasing a synchronizer pin that usually joins the cam follower and rocker arms, then the deactivation of cylinders is attained. The engine U1261 code solves the synchronizer pin is unconfined using hydraulic compression which is measured by a dedicated solenoid. Network problem of the car engine is easy to solve and for fixing the network problem, no part is necessary to change.