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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 P0137, P0138, P013A, P013B, P013E, P013F, P2270 Or P2271: HO2S >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON.
  2. Verify no HO2S heater DTCs are set.
    • Go to next step: If a DTC is not set. 
  3. Engine running.
  4. Verify the scan tool HO2S 1 or 2 parameters are between 50 - 1, 050 mV.
    • If not between 50 - 1, 050 mV. 

      Refer to Circuit/System Testing below.

    • Go to next step: If between 50 - 1, 050 mV. 
  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 below.

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