Solve all problems from the car engine and confirm the car engine is fully ok for driving. You cannot fix the car engine problem, you should try to solve or check it. You may depend on the automobile manufacturer or automobile repair center where technicians are available to help. The general meaning of the car engine P2736 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 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.