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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0010 - P034B)) >> Diagnostic Information And Procedures >> DTC P0191 Or P0192: Fuel Pressure Sensor >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition - On / Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following system/component:5V Reference
    • Go to next step: If none of the DTCs are set 
  3. Verify there are no DTCs set related to the following system/component:B310 Fuel Pressure/Temperature Sensor
    • If other DTCs are set - With DTC P0191 set. 

      Refer to Circuit/System Testing.

    • Go to next step: If only DTC P0191 is set & No other DTCs related to the concerned component are set. 

      Replace the component:B310 Fuel Pressure/Temperature Sensor

    • Go to next step: If none of the DTCs are set 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  5. Verify that no DTCs are set.
    • If any of the DTCs are set 

      Refer to Circuit/System Testing.

    • Go to next step: If none of the DTCs are set 
  6. All OK.
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