You need to know the real meaning of the car engine P1736 Code what have come from the car engine while it was tested. The car engine P1736 Code lets you know about the car engine. The meaning of the code helps to fix the car engine problem and you can use automobile dictionary meaning of the code and it 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 6 for Cruise Control System – Vehicle Accel Too High.