Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.

P0191

The difference between the following parameters is greater than a predefined value : Fuel Rail Pressure Sensor 1 & Fuel Rail Pressure Sensor 2 - For greater than 2.6 s

P0192

Fuel Rail Pressure Sensor 1 = Less than a predefined threshold - For greater than 2.6 s

P127C

Fuel Rail Pressure Sensor 2 = Greater than a predefined threshold - For greater than 2.6 s

P128A

Fuel Rail Pressure Sensor 1 = Greater than a predefined threshold - For greater than 2.6 s

P128B

Fuel Rail Pressure Sensor 2 = Greater than a predefined threshold - For greater than 2.6 s

P16E4

Fuel Rail Pressure Sensor Signal = Less than a predefined threshold - For greater than 2.6 s

P16E5

Fuel Rail Pressure Sensor Signal = Greater than a predefined threshold - For greater than 2.6 s