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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Engine Controls And Fuel - 1.5L (LFV) - DTC P034A-DTC P31BF And Symptoms) >> Diagnostic Information and Procedures >> DTC P0496 >> Circuit/System Testing

Circuit/System Testing

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, engine OFF.
  2. Seal the EVAP system using the Purge/Seal function with a scan tool.
  3. Start the engine.
  4. Observe the fuel tank pressure sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 V after 90 s.
    • If not within specifications 

      Replace the Q12 Evaporative Emission Purge Solenoid Valve

    • Go to next step: If within Specifications 
  5. All OK
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