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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (5 Of 5)) >> Diagnostic Information and Procedures >> DTC P2452 or P2454-P2456 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition On, verify DTC P0651 is not set.
    • Go to next step: If the DTC is not set 
  2. Engine idling.
  3. Verify the scan tool DPF differential pressure parameter is within 0 - 10 kPa (0 - 1.5 PSI).
    • If not within 0 - 10 kPa (0 - 1.5 PSI) 

      Refer to Circuit/System Testing.

    • Go to next step: If within 0 - 10 kPa (0 - 1.5 PSI) 
  4. 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.
  5. Verify that the DTC is not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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