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Home >> Buick >> 2017 >> Verano Base, Gas >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 2.4L (Lea) - DTC P0010 To DTC P0328 >> Diagnostic Information and Procedures >> DTC P00F4-P00F6: Intake Air Humidity Sensor >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON, verify that DTC P0641, P0651, P0697, or P06A3 is not set.
    • If none of the DTCs are set 
    2. NOTE:

    To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 2 and 3 of this verification procedure only if the ignition has been OFF for 8 hours or more.

  2. Ignition ON.
  3. Verify the following scan tool parameters are within 25°C (45°F) of each other.
    • Start-Up IAT Sensor 1
    • IAT Sensor 2
    • If not within 25°C (45°F) 

      Refer to Circuit/System Testing.

    • If within 25°C (45°F) 
  4. Engine idling, verify the scan tool Intake Air Humidity parameter is between 5 and 90 %.
    • If not between 5 and 90 % 

      Refer to Circuit/System Testing.

    • If between 5 and 90 % 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  7. All OK
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