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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls And Fuel - 2.0L (LTG) - Diagnostic Information And Procedures (P0010 - P0333)) >> Diagnostic Information And Procedures >> DTC P0131, P0132, P015A, P015B, P223C Or P223E: HO2S >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify no other DTCs are set.
    • Go to next step: If no other DTCs are set 
  3. Engine running.
  4. Fuel Control Loop Status = Closed Loop
  5. Verify the scan tool parameter:HO2S 1 = Between Lambda 0.8 and 1.1
    • If not between Lambda 0.8 and 1.1 

      Refer to Circuit/System Testing below

    • Go to next step: If between Lambda 0.8 and 1.1 
  6. 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.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to Circuit/System Testing below

    • Go to next step: If the DTC is not set 
  7. All OK.
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