Some info about Accelerator Pedal Position Sensors (APPS):
This sensor is used to on your vehicle in place of a traditional throttle cable. Mounted on your gas pedal, it measures the driver's input on the gas pedal.
2018 Ford Fusion equipped with 2.7L V6 Gas DOHC Turbo, 2.5L L4 Gas DOHC, 2.5L L4 Flex DOHC, 2.0L L4 Gas DOHC Turbo, 2.0L L4 Electric/Gas DOHC, 1.5L L4 Gas DOHC Turbo
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w/ Metal Pedal
2018 Ford Fusion equipped with 2.7L V6 Gas DOHC Turbo, 2.5L L4 Gas DOHC, 2.5L L4 Flex DOHC, 2.0L L4 Gas DOHC Turbo, 2.0L L4 Electric/Gas DOHC, 1.5L L4 Gas DOHC Turbo
w/ Metal Pedal