The engine U1168 Code has a right meaning and the right meaning of the code is from the car manufacturer of your car. The code has different meanings from different car manufacturers what you must not allow for solving the car engine. The automobile engineer of the car must consider the right meaning. If the correct meaning of the code is not followed, the automobile engineer may try to solve the car engine according to the automobile dictionary meaning. The automobile dictionary meaning of the code is general meaning and it must not help always for solving the car engine problem.