The meaning of the car engine P2604 Code is necessary to fix the car engine but make sure that the meaning of the code is correct and useful. The meaning of the code should be taken from the car manufacturer. However, you should not take any meaning of the car engine code. The car engine’ all problem should be fixed fast if you want to drive the car properly. If you want to fix the car engine, you must depend on car engineer who can easily fix the car engine and the engineer must be expert in this case for solving the car engine.