The P2BAA Code is menaingful and if you want to get that meaning, you should read the car manual and engine manual. Because in those manuals, you will get all necessary information for solving the car engine problem. Do not drive the car until you fix the car engine. You can know the dictionary meaning of the code but that is not important thing if you have all necessary information and tool for solving the car engine. The dictionary meaning of the code gives some general information what is not necessary for an automobile engineer for solving the car engine.