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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0010 To DTC P0442) >> Diagnostic Information And Procedures >> DTC P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0053, P0054, P0056, P0057, P0058, P0059, P0060, P0135, P0141, P0155 Or P0161: HO2S Heater Control Circuit/HO2S Heater Resistance/HO2S Heater Performance >> Circuit/System Verification

Circuit/System Verification

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.
  1. Ignition ON. Engine Running.
  2. Verify the parameters listed below do not display Malfunction when commanding the HO2S Heater Bank 1 or 2 Sensor 1 or 2 to 0% and 100% with a scan tool :
    • HO2S Heater Control Circuit Low Voltage Test Status Bank 1 or 2 Sensor 1 or 2
    • HO2S Heater Control Circuit Open Test Status Bank 1 or 2 Sensor 1 or 2
    • HO2S Heater Control Circuit High Voltage Test Status Bank 1 or 2 Sensor 1 or 2
    • If Malfunction is displayed 

      Refer to Circuit/System Testing below.

    • 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 below.

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