The trouble P0538 Code lets you know the problem of the car engine and location of the problem. It is important to follow the right meaning of the code if you want to avoid further problem from the car engine. This problem of the powertrain of the car engine is not very difficult to solve. You can fix the car engine at cheap rate. Do not drive the car until the car engine is ok. If you do not know the way of solving the car engine and you do not have tools, you must take the car to automobile repair center.