The meaning of the car engine P2525 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 5 for Computer And Auxiliary Outputs. 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage and 5 for Park or Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit. The car engine P2525 code seems a kind of powertrain problem and this problem is not difficult to solve for an automobile engineer. That is why, you should take the car to an automobile repair center where you will sufficient help and tools for solving the car engine.