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Joel, Auto technician
Category: Chevy
Satisfied Customers: 1603
Experience:  GM, ASE Certified Technician. Chevy, Buick, Pontiac, Olds. Over 18 Years experience and growing.
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Chevy aveo: a dtc p0449, evaporative emission controll malfunction

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Ihave an 04 chevy aveo with a dtc p0449, evaporative emission controll malfunction
Hello a nd welcome. This code is a ,alfunction in the vent vavle circuit, or the valve itself. The valve is behind the rt. rear wheel. Check the harness at the valve, and at the passthrough connector in the body for a broken wire, if ok, then the valve is stuck and needs to be replaced. sometimes tapping on it will free it up, but thast requires a scan tool to turn it on and off as you are tapping on it. It is mounted on the evap. canister, behind the rt. rear wheel, from undernieth. A 2-wire connector, and 2 hoses.
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