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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 1.0L (L4B L4F L4G LIJ) Or 1.2L (L4H L4K LIF LIH) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0089, P00C6, P228C, P228D, or P2C1E-P2C20 >> 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 P0016, P0017, P0018, P0019, P0090, P0091, P0092, P00C8, P00C9, P00CA, P0111, P0112, P0113, P0116, P0117, P0118, P0128, P0192, P0193, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P0628, P163A is not set.
    • Go to next step: If none of the DTCs are set 
  3. Engine - Idling
  4. Verify the scan tool parameter: Fuel Rail Pressure Sensor = 17.5 to 22.5 MPa (2538 to 3263 PSI)
    • If not between 17.5 and 22.5 MPa (2538 and 3263 PSI) 

      Refer to Circuit/System Testing

    • Go to next step: If between 17.5 and 22.5 MPa (2538 and 3263 PSI) 
  5. Perform the following action: Clear the DTCs.
  6. WARNING:

    Road test a vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.

  7. Accelerate the vehicle with wide open throttle.

    Verify DTC P0089, P00C6, P228C, P228D, P2C1E, P2C1F, P2C20 is not set.

    • If DTC P0089, P00C6, P228C, P228D, P2C1E, P2C1F, P2C20 is set 

      Refer to Circuit/System Testing

    • Go to next step: If DTC P0089, P00C6, P228C, P228D, P2C1E, P2C1F, P2C20 is not set 
  8. 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 
  9. All OK.