The powertrain problem is located in your car engine and the engine P1739 Code lets you know this by the automobile dictionary meaning of the code. The car engine code’s meaning is found from various sources and the automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 3 for Cruise Control Servo Indicates Low and 9 for Kick-Down Switch Failed Short. You must look for the real meaning of the code and if you find the real meaning, then you do not need to use the general meaning of the code.