The engine should be fixed by the meaning of the engine P0740 Code and you can learn many things from the car engine code what are important for solving the car engine. Like the all car engines, this car engine scheme works especially developed hydraulic lifters what is known as switching roller followers for the engine P0740 code intake and finish valves. The lifters can be distorted by disengaging an inner locking pin. The locking pin is disengaged using solenoids to change oil heaviness fed into the lifter. The powertrain problem is not difficult to solve and you can fix the car engine without changing any part.