Conditions for Setting the DTC
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
P018B
Fuel Pressure Sensor = Change is less than 30 kPa (4.4 PSI) - For greater than 5 s
P018C
Fuel Pressure Sensor = Less than 7 kPa (1 PSI) - For greater than 1 s
P018D
Fuel Pressure Sensor = Greater than 751 kPa (109 PSI) - For greater than 1 s