The engine P0180 OBD 2 code on cars with automatically controlled involuntary transmissions, the 3-4 shift solenoid is accountable for motivating the hydraulic circuits to start clutches or bands that modification gears inside the automatic transmission. The automobile meaning of the engine is available p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 1 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1 and 0 for Transmission Engaged At High Throttle Angle. The real meaning of the code is not helpful for you. The real meaning of the code is necessary to use for solving the car engine problem and it is used by automobile engineer.