Fuel Filler Door Release Solenoid (hybrid vehicles)
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The fuel filler door ajar switch is integrated into the fuel filler door release solenoid. The PCM monitors the fuel filler door ajar switch and if it detects a fault with the fuel filler release system, sends messages to the IPC to indicate a fault is detected.