The engine P0302 Code is known as helping code. Because during the car engine is fixed, the code helps to locate the car engine problem place. The meaning of the code is not similar and the meanings are changed from the manufacturers to manufacturers. Due to wrong use of the code, you may get new problems in the car engine. The problem of the car engine can be very serious. That is why, do not rely on the general or automobile meaning of the code and do not use any meaning of the code for solving the car engine problem.