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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (P0010 - P034B)) >> Diagnostic Information And Procedures >> DTC P0030, P0031, P0032, P0036, P0037, P0038, P0053, P0054, P0135, P0141, P103B, Or P103C: HO2S Heater >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Engine running.
  2. Verify the parameters listed below do not display Malfunction:
    • HO2S 1 or 2 Heater Control Circuit Low Voltage Test Status
    • HO2S 1 or 2 Heater Control Circuit Open Test Status
    • HO2S 1 or 2 Heater Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing

    • Go to next step: If Malfunction is not displayed 
  3. 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.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing

    • Go to next step: If the DTC does not fail 
  5. All OK.
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