The general meaning of the car engine P2485 Code is found online and it is very useful for solving the car engine. The automobile dictionary meaning of the car engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 4 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1 and 5 for Park/Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit. Do not use any wrong meaning of the code for solving the car engine problem. The wrong meaning of the code may create more problem in the car engine.