Solve the car engine problem as soon as possible. If you have tools and machines for checking the car engine and solve all issues of the car engine, you need to apply the meaning of the code. The car engine P2653 Code has different meanings and right meaning of the code is most essential for solving the car engine. You can apply automobile dictionary meaning of the code and it is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 is MFG – Manufacturer Specific. 6 is Vehicle Speed Control And Idle Control System. 5 for TP Sensor Learn Not Complete and 3 for Transmission Control Module Reprogrammable Memory.