The engine P2191 Code has different meanings and automobile dictionary meaning of the code is also important and suitable meaning of the code but it is not perfect like the real meaning. Thee car engine code comes when the car engine is tested by the car engine code reader. An expert automobile engineer also test the car engine manually to know more about the car engine problem. So, it becomes easier for him to identify the problem and solve the car engine problem as soon as possible. So, you must take the car to an expert engineer and fix the car engine properly.