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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> 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 P2B97 >> 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 there are no DTCs set related to the following component/system:
    • B34 Engine Coolant Temperature Sensor
    • B75C Multifunction Intake Air Sensor
    • B115 Vehicle Speed Sensor
    • Q14 Exhaust Gas Recirculation Valve
    • Go to next step: If a related DTC is not set 
  3. 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 

      Replace the component: M122 Exhaust Pressure Control Valve Actuator

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