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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 P2381-P2384 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P0652 is not set.
    • Go to next step: If the DTC is not set 
  3. Verify the scan tool parameter: Exhaust Gas Recirculation Pressure Sensor = 0 to 10 kPa (0 to 1.5 PSI)
    • If not between 0 and 10 kPa (0 and 1.5 PSI) 

      Refer to: Circuit/System Testing

    • Go to next step: If between 0 and 10 kPa (0 and 1.5 PSI) 
  4. Verify the scan tool parameter: Exhaust Gas Recirculation Pressure Sensor = The value should not spike or drop out.

    Perform the action while monitoring the parameter:

    • Wiggle the harness and connector: B345R Exhaust Pressure Differential Sensor - Exhaust Gas Recirculation
    • Wiggle the harness and connector: X1 @ K20 Engine Control Module
    • If the value spikes or drops out 

      Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)

    • Go to next step: If the value does not spike or drop out 
  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.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to: Circuit/System Testing

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