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Home >> Buick >> 2015 >> Verano Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 2.4L (Lea) - Dc P0010 To DTC P0328) >> Diagnostic Information and Procedures >> DTC P0191: Fuel Rail Pressure Sensor Performance >> Conditions for Setting the DTC

Conditions for Setting the DTC

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Condition 1 

The difference between the low side fuel pressure and the high side fuel pressure is less than or equal to -0.65 MPa (-94 psi) or greater than or equal to 0.6 MPa (87 psi) with the high pressure fuel pump actuator commanded OFF. The condition exists for greater than 3 s.

Condition 2 

The difference between the relief pressure and the measured high pressure is less than or equal to -5 MPa (-725 psi) with the high pressure fuel pump actuator commanded ON. The condition exists for greater than 2 s.

Condition 3 

The difference between the commanded high pressure and the measured high pressure is greater than or equal to 3 MPa (435 psi) and the modeled injection pressure is greater than or equal to 3 MPa (435 psi) with the high pressure fuel pump actuator commanded ON. The condition exists for greater than 3 s.

Condition 4 

The difference between the measured maximum high pressure and the measured minimum high pressure is less than or equal to 0.1 MPa (14.5 psi) with the high pressure fuel pump actuator commanded ON. The condition exists for greater than 60 s.