Due to use the right meaning of the engine P242D Code, it may be easier to solve the car engine problem fast. Due to use the wrong meaning of the code, the car engine may get terrible problem what may make serious accident in future. Do not use wrong meaning or the automobile meaning of the code for fixing the car engine problem. However, you should find the right meaning of the code what must linked with your car. Once the car engine problem is solved, then you can drive the car but you must take the car for a test drive.