The engine P0242 Code is found in many car engines and the engine code is meaningful. The code has different meanings and you need to know the right meaning. Your car engine code meaning is found in car engine manual. Do not use any meaning of the code. You will get various meanings of the same code. You will find the meaning of the code from your car manufacturer. Do not use any meaning of the code what you find online. You must look for the right meaning in the car engine manual what is provided by your car manufacturer. Make sure that your car is perfectly ok after solving the car engine and by a test drive it can be ensured.