You have to find the manufacturer name and model of the car to know the meaning of the engine P0052 Code. It is important to know the actual meaning of the code what is relevant with your car and model number. If you search online, you will get a common meaning of the code and this meaning of the code is not helpful for solving the car engine problem. The real meaning of the code is related with the manufacturer. Read the car manual to know all necessary information about the car engine problem. You must take the car for a test drive.