Thread: P0449 Code
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Old 09-23-2011, 06:53 PM
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HUMTECH HUMTECH is offline
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Default Re: P0449 Code
Its a code for evap vent valve performance. Either the valve is bad, pcm is bad or power or ground circuit to the vent valve. In most cases its the valve but have seen broken wires as well. Never changed a pcm for this yet. Its located on the outside of the left framerail.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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