Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
P1178
Fuel Pump Driver Control Module Fuel Level Sensor 1 Internal Supply = Malfunction For greater than 1 s
P1179
Fuel Pump Driver Control Module Fuel Level Sensor 2 Internal Supply = Malfunction For greater than 1 s