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rhooker 9/23/2012
2007 Chevrolet Tahoe LTZ 8 Cyl 5.3L - Engine
What is this fault code P0496
Have a check engine light on
1 Answer
  • CVO
    CVO 9/23/2012
    Trouble Code: P0496

    Evaporative Emission (EVAP) System Flow During Non-Purge


    Symptoms of a P0496 DTC will include MIL illumination, and most likely no other noticeable symptoms. Some may experience a hard start / crank condition. In some cases the engine may run rich which may not detected, but can cause damage long-term (think: catalytic converter damage).

    Potential Causes

    Potential causes of a P0496 EVAP code include:

    Faulty purge or vent solenoid/valve
    Plugged EVAP canister
    Failed EVAP / fuel pressure sensor
    Poor electrical connection
    Short electrical circuit condition
    (Hyundai, Isuzu)
    Faulty canister purge valve
    Blocked vapor canister
    Faulty vent solenoid
    Leaking EVAP system hose (Hyundai)
    Faulty purge flow sensor (Kia, Mazda)
    Possible Solutions

    The most common fix for this DTC is to replace the purge solenoid valve. However, be sure to do a proper diagnosis before replacing parts!

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