Water In Fuel
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The water in fuel indicator informs the driver that water has been detected in the fuel. The IPC receives the water in fuel message from the GWM over the HS-CAN3. The GWM receives the water in fuel message from the PCM over the HS-CAN1.