System and method of preventing inadvertent check engine telltale

A system for use in a vehicle having a driver, an engine, an ignition switch, a check engine light and a fuel injection port housing, the fuel injection port housing having a fuel door and a fuel injection port, the system configured to prevent the check engine light from illuminating every time a fuel cap is not fully seated in the fuel injection port, the system comprising:

• an interference member disposed within the fuel injection port housing, the interference member having a contact surface displaced a predetermined distance from an inner surface of the fuel door, the predetermined distance equal to the distance from the inner surface of the fuel door and an outer surface of the fuel cap when the fuel door is closed and the fuel cap is fully seated within the fuel injection port, the interference member preventing a closure of the fuel door every time the fuel cap is not fully seated in the fuel injection port;
• a single sensor, the single sensor detecting if the fuel door is open and communicating a position of the open fuel door;
• a processor in communication with the single sensor, the processor processing the communication from the single sensor, and issuing a detectable signal based on only the communication from the single sensor while the engine is operating, the detectable signal indicating to the driver to check the fuel cap so as to prevent the check engine light from illuminating when the fuel cap is not fully seated within the fuel injection port.