Learn about this car engine P2304 Code what is found from the car engine after it I tested. If you do not know the meaning of the code, you should try to solve the car engine but you can learn about it from online. The real meaning of the code helps to fix the car engine and you will find the real meaning from car engine manual. Read the manual of the car engine and know the accurate meaning. The problem of the car engine can be fixed properly and you do this by an trusted automobile engineer. Otherwise, you may get different problem in the car engine.