The automobile dictionary meaning of the engine P1224 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 2 for Accelerator Pedal Position (APP) Sensor 1 Performance. 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage and 4 for Cruise Vehicle Speed/Set Speed Difference Too High. This meaning of the code is used when the real meaning of the car engine code is found. Do not drive the car with the car engine problem. You need to fix the car engine properly and it is possible when you depend on the real meaning of the code and an automobile engineer.