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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 123 (Engine Controls And Fuel - 2.0L (LTG) - DTC P0010-DTC P0336) >> Diagnostic Information and Procedures >> DTC P0090-P0092, P00C8, P00C9, or P00CA >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Perform the scan tool control function: Fuel Pressure Regulator - On and Off

    Verify the scan tool parameter:

    • Fuel Pressure Regulator Control Circuit High Voltage Test Status = OK or Not Run
    • Fuel Pressure Regulator Control Circuit Open Test Status = OK or Not Run
    • Fuel Pressure Regulator Control Circuit Low Voltage Test Status = OK or Not Run
    • Fuel Pressure Regulator High Control Circuit High Voltage Test Status = OK or Not Run
    • Fuel Pressure Regulator High Control Circuit Open Test Status = OK or Not Run
    • Fuel Pressure Regulator High Control Circuit Low Voltage Test Status = OK or Not Run
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  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.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to: Circuit/System Testing

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