When any problem of the car engine is identified, you must not drive the car with the car engine problem. You must take the car for repair. When the car engine is checked, the car engine P1640 Code has been found. The meaning of the code is very important for solving the car engine. The right meaning of the code is manufacturer’s meaning. If you have not that meaning, you cannot solve the car engine. The automobile dictionary meaning is secondary meaning what you can use for solving the car engine problem but you can use that meaning when you have not the right meaning of the code.