With the simple car engine problem, different fetal problems may arrive in the car engine what may be expensive to solve. The engine P1722 Code lets you know about the problem of the car engine but it is not seriously enough to identify the problem of the car engine. The car engine problem can be a serious problem and this problem should be fixed as soon as possible. According to the right meaning of the car engine code, it is possible to identify the car engine problem and take step for solving the car engine problem. Do not drive the car if the car engine is faulty.