The problem from the car engine should be removed if you want to remove the engine P0622 Code from the car engine code reader. It is important to underrated the cause of the car engine’s problem. The powertrain problem of the engine is easily fixable and do not need to change any part from the car engine’s for solving the powertrain problem. Do not allow any other false meaning what is connected with the real meaning of the car engine. You must accept the meaning of the code what is given by your car manufacturer and after solving the car’s engine take the car for a test drive.