The engine U1117 Code is very important thing and it is necessary to know the right meaning of the code. You need to read the car manual to know the model number and manufacturer name of the car. Once you find the real meaning of the code, you can start process of fixing the car engine problem. The engine U1117 code seems a kind of network problem and this problem can be solved easily. By the deactivation of cylinders is realized and by releasing a synchronizer pin that generally interlocks the cam follower and rocker arms. The engine U1117 code resolves the synchronizer pin is unconfined using hydraulic compression which is controlled by a devoted solenoid.