For an automobile engineer, it is important to know the car engine problem and that is why, meaning of the engine U1068 Code is necessary to know. You will find general or automobile dictionary meaning of the engine code for leaning purpose only but do not use it for fixing the car engine problem. The engine code U1068 is the main thing to verify is to confirm the process of the VCT solenoid. You are looking for a sticking or stuck VCt solenoid valve produced by pollution. Refer to car precise repair manual to perform module tests for the VCT unit.