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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 92 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0087, P0089, P228C, P228D, or P2293 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P0090, P0091, P0092, P0191, P0192, P0193, P0627, P0628, P0629, P1007, P1029, P102A, P102B, P102C, P1255, P129D, P129F, P12A6, P163A, P163B, P2293, P2294, P2295, P2296, P2635 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Engine Cranking
  4. Verify the scan tool parameter: Fuel Rail Pressure Sensor 1 = Greater than 13 MPa (1885 PSI)
    • Go to next step: If greater than 13 MPa (1885 PSI) 
  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.
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