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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Controls And Fuel - 1.4L (LUJ LUV) - DTC P0010 To DTC P0246) >> Diagnostic Information and Procedures >> DTC P0171 or P0172: Fuel Trim System >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify no other DTCs are set.
    • If no other DTCs are set 
  3. Verify DTC P0171 or P0172 is not set.
    • If a DTC is set 

      Refer to Circuit/System Testing.

    • 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 P0171 or P0172 is not set.
    • If any of the DTCs set 

      Refer to Circuit/System Testing.

    • If none of the DTCs set 
  6. All OK.
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