The engine P0168 Code is found in the car engine. This code comes on the engine code reader’s screen when the car engine code reader cannot read the area of the engine. As the engine code reader cannot read the area P0168 of the car engine, so, the code has appeared. However, you need to take step for solving the car engine problem and you must take the car to the car engineer who knows well how to fix the car engine problem. Do not use wrong meaning of the code for solving the car engine problem. For the wrong meaning of the code, you may add new problem in the car engine.