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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0443 To DTC P3452 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P2096, P2097, P2098, P2099: Post Catalyst Fuel Trim System Low/High Limit Bank >> 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.
  2. Verify no other HO2S or fuel trim DTC is set.
    • Go to next step: If no other HO2S or fuel trim DTC is set 
  3. Verify DTC P2096, P2097, P2098 or P2099 is not set.
    • If a DTC is set 

      Refer to Circuit/System Testing below.

    • Go to next step: If no DTC is set 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
  5. Verify DTC P2096, P2097, P2098 or P2099 is not set.
    • If a DTC is set 

      Refer to Circuit/System Testing below.

    • Go to next step: If no DTC is set 
  6. All OK.
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