Question about 2001 Pontiac Montana

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Check engine light on which read po449 evac vent solenoid .where is it located

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You have to lift the vehicle and take to look around your gas tank area you will see several plastic hoses going in and out from gas tank fallow them to see where they are connected, you have one black box which is evap canister and your evap vent valve should be around there.

Posted on Mar 27, 2011

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2008 chevy cobalt engine light on


Your Po449 code means: Evaporative Emission (EVAP) Vent Solenoid Control Circuit. Check to see if anything on you EVAP system has gotten disconnected and make sure that none of your hoses have gotten old and bridle or have holes. If everything looks ok, you probably have to replaced the Vent Solenoid Valve, which is located on the EVAP canister.

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P0449 BUICK Description The Engine Control Module (ECM) monitors the Evaporative Emission System (EVAP) Vent Valve/Solenoid system wiring for opens or shorts. Could be a problem with the vent solenoid or other component of the fuel tank venting system.

Read more: http://engine-codes.com/p0449_buick.html#ixzz21r2pw0wE

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P0449 control vent valve/solenoid circuit malfunction, This code necessarilly deal with replacing the vent solenoid it about the circuit,the evap vent solenoid circuit may have rub through on the frame (located on the back of the fuel tank),it can also be the connector,the vent solenoid itself,or the connector

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My 2003 chevy silverado 1500 4wd (5.3 Vortec) has a trouble code (po449 & 455) I know what that problem is but, I do not know where the locations of this problem would be. PO449 is a Evaporative...


The first thing I would check is the fuel cap. Your vehicle uses a closed vent system to control the fuel vapors in the tank and then vent the vapors to the engine intake system to burn. so you have a leak either your purge/ vent solenoid is stuck or open all the time not allowing the on board diagnostics to run the test or you may a bad fuel cap, and it is venting to the atmosphere allowing the gross leak. The purge/ vent valve is under the vehicle next to the charcoal canister.

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2005 Malibu, check engine light is on, code read says PO449, what is it and where would it be located on car?


P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

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2 Answers

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CODE PO449 EVAP VENT SOLENOID CONTROL CIRCUIT MALFUNCTION CONDITIONS. CHECK FUSE IF GOOD THE VENT SOLENOID FAILED.EVAP LOCATED ON A BRACKET NEAR THE FUEL TANK.

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I have 2006 GMC Sierra SLE 4WD 5.3 liter and my engine light comes on giving me the code PO449 Evaporative Emission Control System Vent Valve/ Solenoid Circuit Malfuction. What could cause this code to...


There is a solenoid that open and closes with 12 volts, usually located close to the fuel filler tube area. This open to allow you to fill your tank, then closes after some inputs for the computer are satisfied, and then a pressure sensor verifies the system is working. First, make sure the cgas cap is tight, and if the light doesn't go away in a couple days of normal driving, get the solenoid checked.

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2005 chevy cobalt 37.000 miles engine light on. Code is obdIIpo449b any idea what it is the car runs great


CODE PO449 - EVAP VENT SOLENOID CONTROL CIRCUIT MALFUNCTION.SOUND LIKE EVAP VENT SOLENOID HAS FAILED OR A BLOWN EVAP VENT SOLENOID FUSE.

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