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code p 0449

Henry2018

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Nov 29, 2019
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Hi i have a code P0449 and I just replaced the vent solenoid and cleared the code and it came right back any ideas what else could be going on ?
 
To much or to little resistance or a mechanical problem with the vent valve itself. Could check the mechanical portion of the EVAP vent valve and see if there is a problem.
 
Check the wiring at the connector and follow it back some, common problem I see with P0449 on GM trucks is a bad wire at the valve or within a foot of it.
 
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