The meaning of the engine P0075 Code is necessary thing and the most necessary thing is retrieved the real meaning of the code. The automobile meaning of this code, you will find online but you must not use that meaning. The automobile meaning of the code is P for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 0 for Fuel And Air Metering. 7 for Vehicle Speed Output Circuit and 5 for Park/Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit. You should take the car to professional someone or automobile repairing store for solving the engine problem.