The car engine P2502 Code is short explanation of the car engine problem. You will learn many things from the car engine code by the description of the car engine. You need to check your choke plate. Confirm that it is located correctly or not. You also need to check it is still working as it should. Is it opened or working completely? If not, then you need to replace it or repair it. If the part is damaged or quite severe, I suggest you put down your reparation tools and jump looking about for a extra choke plate to circumvent a repeat of this nasty incident.