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What does code po499 mean on my 2003 dodge 2500

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Trouble Code: P0499

NVLD Canister Vent Solenoid Circuit High

Possible Causes:


NVLD canister vent solenoid control circuit is open or is shorted to power.NVLD canister vent solenoid ground circuit is open.NVLD canister vent solenoid is damaged or it has failed.PCM has failed.Mr. Perkins,here are the causes for the code.

Posted on Nov 28, 2012

  • anthony perkins Nov 28, 2012

    it has put code stating pcm open before does this mean pcm is bad or shoukld i try vent seleniod first

  • Thomas Perkins
    Thomas Perkins Nov 28, 2012

    Vent solenoid first,can take back if it doesn't fix.

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Probably bad vent solenoid or connection . Part of emissions for fuel system. Usually located near Evap canister, possibly on frame rail as well. Approx $20-$30 part . Try cleaning connection first.

Posted on Nov 28, 2012

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