Vent Valve Solenoid replaced, still getting error 0449 mechanic

no.not unless you clear the code,or until the computer sees it is working,then it will go out on it's own.or take it to Autozone and have them clear it,if they will.

Here's the correct procedure: Professional scanner can run functional test on solenoid to determine if it's working OR not!.. 'After' testing and replacing (if necessary).. scanner can run EVAP system test in shop service bay to confirm repair and then clear codes .. IF problem is fixed.. Code should not return!!