The engine P2553 Code is found in the car engine and it becomes visible on the car engine code reader screen when the car engine is tested. It is important to get the real meaning of the code. If the real meaning of the code is not found, the general meaning or automobile dictionary meaning of the code can be used. The meaning of the car engine code P2553 is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 5 for Computer And Auxiliary Outputs. 5 for TP Sensor Learn Not Complete and 3 for Transmission Control Module Reprogrammable Memory.