The automobile dictionary meaning of the car engine P1600 Code also helps to solve the car engine. The general meaning of the code is necessary but comparatively with the real meaning of the car engine code, the automobile dictionary meaning is not so important. The automobile dictionary meaning of the engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 6 for Vehicle Speed Control And Idle Control System. 0 for IC Circuit High Voltage and 0 for Transmission Engaged At High Throttle Angle. If you know how to solve the car engine, you can fix the car engine.