The engine P1243 Code comes on the engine code reader when the car engine is checked. It lets you know about the problem of the problem and location of the car engine problem. The problem from the car engine should be fixed correctly and the automobile engineer must use the right meaning for solving the car engine. If the right meaning of the code is ignored, the engine may get new problem due to use of the wrong meaning of the code. Here, the problem is in powertrain and without changing any part from the car engine, this problem can be fixed.