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Home >> Chevrolet >> 2018 >> Impala Premier, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (P0010-P0336)) >> Diagnostic Information and Procedures >> DTC P0191, P0192, or P0193 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Verify DTC P0641 is not set.
    • Go to next step: If the DTC is not set 
  3. Engine idling.
  4. Verify DTC P0191, P0192 or P0193 is not set.
    • If any of the DTCs are set 

      Refer to Circuit/System Testing.

    • Go to next step: If none of the DTCs are set 
  5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. 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.

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