The diagnosis P258E Code is found on the engine code reader and it is connected with the powertrain of the car engine. The meaning of the code is found in the manual of the car engine what is provided from the car manufacturer. The code tells about the car engine problem and if the correct meaning of the code is not properly, the automobile engineer may not solve the car engine. Some tools are necessary to use to solve the car engine problem. If you do not know how to fix the car engine, you must transfer the car to automobile engineer to solve the car engine.