The automobile dictionary meaning of the engine P0453 Code contains some general information and do not use that meaning for solving the car engine. Those general information is not appropriate for solving the car engine. However, you need to fix the car engine as soon as possible and this is good if you fix the car engine with help of an expert engineer. Without help of an expert, it becomes difficult to solve the car engine. The automobile engineer knows what to use and how. So, you can solve the car engine problem by himself and do not use any other meanings of the engine code.