The right meaning of the car engine P3424 Code is very important thing and you will get the right meaning of the code from the car manufacturer but you can learn the automobile dictionary meaning from online. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 3 for SAE – Generic. 4 for Transmission. 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage. 4 for Cruise Vehicle Speed/Set Speed Difference Too High. Do not drive the car if the car engine is not fixed properly. Fix the car engine by an automobile engineer.