Question about 2009 Hyundai Sonata

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Will replacing the closed canister valve take care of the p0449 code .

Im getting a po449 code and gas is spilling back out at the pump when filling up. I have 70k on the vehicle. Will replacing the closed canister valve take care of this problem? Also how do i clear the code. Thanks

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Take battery cable off for about five mins. Put it back on and see if that works.

Posted on Mar 10, 2015


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: What did the dealer say?

We went to Wilkins Hyundai in Elmhurst, IL
Just as we were told by the Tech at NTB (where we thought it was a battery problem) that it was the Crankshaft Indicator - and it needed to be re-timed. This is what Wilkins found out (after about 3 days of waiting):
FOUND CODE: P0335 and P1372
TOTAL COST: $169.03
It was NOT an recall item.
The back hatchdoor latch issue was quoted to me but we didn't fix it. (the latch sticks in an open position) That cost was about $217...reeedonkulous!!!
It seems to be operating fine - to me it still sounds like it's racing a bit, but that's the way it always felt.

Posted on Jan 04, 2009

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SOURCE: CIL on, code P0441, using more gas, hard to fill up

In the first place, P0441 = Evap. Emission System Incorrect Purge Flow. The 'CANISTER CLOSE VALVE' you mention is normally OPEN until the ECU (Engine Control Module) decides to check the fuel system for any leakage - IT closes the valve and then applies a vacuum to the system and monitors it for leakage. This valve (CCV), if sticking CLOSED, only MIGHT set P0441. The most suspect component is the Purge Control Solenoid Valve (located on/near the engine) and is also controlled by the ECU. If this valve is malfunctioning, it can absolutely cause this P0441 to SET!... There is also another component which can CAUSE this code to SET... it's the Differential Pressure Sensor (DPS) or Fuel Tank Pressure Sensor (FTPS) connected to the Evaporative Emissions System. It is this component which monitors 'vacuum' pressure on the system to determine if there is any leakage.. its signal is also used by the ECU to monitor 'purge' of the charcoal canister under normal driving conditions. There is yet another component which can cause the ECU to set P0441.. and that is a restriction in the 'purge' circuit.. clogged charcoal canister, air filter, or a kink in the Evap hose(s).

Posted on Jul 18, 2009

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What makes my Chevy malibu 2005 v6 put system code po449 out

P0449 - OBD II Trouble Code Evaporative System Vent Valve/Solenoid Circuit Malfunction Our emissions expert has put together the following information about the P0449 fault code. We have also included diagnostic procedures you can take to your repair shop if the mechanic is having difficulty analyzing the code.
OBD II Fault Code
  • OBD II P0449
Fault Code Definition
  • Evaporative System Vent Control Circuit Malfunction
What does this mean? The evaporative control (EVAP) system captures any raw fuel evaporating from the fuel storage system (e.g. the fuel tank, filler neck, and fuel cap). Under precise operating conditions-dictated by engine temperature, speed, and load-the EVAP system stores and purges these captured fuel vapors back into the combustion process. The carbon canister, which stores the raw fuel vapors, utilizes a vent valve that allows fresh air to enter the EVAP system. This displaces the fuel vapor as it's purged into the combustion process. Code P0449 indicates that the evaporative control (EVAP) system vent valve solenoid is malfunctioning. This can be caused by either too little or too much electrical resistance or a mechanical problem with the vent valve itself. Symptoms
  • Check Engine Light will illuminate
  • In most cases, there are no adverse conditions noticed by the driver
  • In some cases, there may be a noticeable fuel odor caused by the release of fuel vapors
Common Problems That Trigger the P0449 Code
  • Missing fuel cap
  • Defective Evaporative Vent Valve
  • Defective or damaged fuel cap
  • Distorted, damaged or cracked Fuel Tank Filler Neck
  • Torn or punctured Evaporative system hose(s)
  • Defective Fuel Tank Sending Unit gasket or seal
  • Split or damaged Carbon Canister
  • Defective or damaged fuel tank
Common Misdiagnoses
  • Fuel cap
  • Evaporative Purge Valve
  • Evaporative Vent Valve
Polluting Gases Expelled
  • HCs (Hydrocarbons): Unburned droplets of raw fuel that smell, affect breathing, and contribute to smog

P0449 OBD II Trouble Code

Jan 30, 2017 | Cars & Trucks

1 Answer

I changed everything on a 2007 chevy uplander the camshaft position sensor And the purged sensor And the throttle body and It cam up a new code p0449

DTC P0449: Evaporative Emission (EVAP) Vent Solenoid Control Circuit , your vent solenoid is opened or the wiring circuit is . The vent solenoid is by the charcoal canister at the gas tank .
P0449 Battery voltage is supplied to the EVAP canister vent solenoid valve. The control module grounds the EVAP canister vent solenoid valve control circuit to close the valve by means of an internal switch called a driver. The scan tool displays the commanded state of the EVAP canister vent solenoid valve as ON or OFF. The control module monitors the status of the driver.

May 03, 2016 | Cars & Trucks

1 Answer

Code po449 evap solenoid

What about it ? What would you like to know ? Where is it , what is it ? What engine does yours have , six different possibilities .
DTC P0449: Evaporative Emission (EVAP) Vent Solenoid Control Circuit.
Battery voltage is supplied to the EVAP canister solenoid valve. The ECM grounds the EVAP canister vent solenoid valve control circuit through an internal switch called a driver. The ECM monitors the status of the driver. A scan tool will display the commanded state of the EVAP canister vent solenoid valve as ON or OFF. P0449 Vent Valve Testing EVAP Systems

Mar 10, 2016 | 2008 Chevrolet Trailblazer

2 Answers

I replace gas cap and evap vent solenoid and stel have c ad po449?

have you check the purge valve, and your vacuum lines? here's a vid you might want to check out:

Jun 20, 2015 | 2007 Chevrolet Impala LS Sedan New Cars

1 Answer

Im getting the P0449 code even after testing and putting on a new vent valve solenod.

Now you see that you have to test a system
to find a problem,not install parts based on codes
or their names

Have a shop smoke test the Evap System & find a problem

PO449-Evap System Vent Valve/Solenoid

Need to use the internet better to gather your info
& never replace a part until you learn how it works
& what is does in a system

No testing-leave the hood closed

Aug 24, 2014 | Cars & Trucks

1 Answer

Code p0449 location?

po449-- Evaporative Emission Control System Vent Valve/Solenoid Circuit, causes---Vacuum leaks, damaged hoses or improper routing
- EVAP system - Check fuel cap, canister, valves or components
- Faulty purge or vent solenoids
- Check connector and wiring
- Fuel saturated vapor canister
- Failed EVAP vent solenoid, the best thing to do is have a certified mechanic check it out.for proper diagnosis Good-Day!

Jun 21, 2014 | 2008 Chevrolet Impala

1 Answer

Po449 0n 2006 chevy cobalt

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

Mar 24, 2012 | 2005 Chevrolet Silverado

1 Answer

Po449 2006 chevrolet equinox

P0449: EVAP Emission Control System Vent Vlv/Sol Malf

- Purge Control Valve harness is open or shorted
- Purge Control Valve electrical circuit poor connection
- Faulty canister vent control valve

Feb 07, 2012 | 2003 Chevrolet Silverado 1500

1 Answer

Service engine soon light came on, replaced gas cap it went off but a week later it came back on, when it try to fuel the truck it spill the gas back out like it is a full tank

One of the most common causes, is blockage in the venting system from fuel entering the vent lines and into the charcoal canister, the fuel gets absorbed by the charcoal canister causing it to swell and block vent lines. the gas tank contains both fuel and air. when you fill it up the gas displaces the air and the air has to go somewhere. but the air that is displaced is full of gas vapor so the gas vapor goes to the vent lines and into the charcoal canister, when the charcoal canister swells up it prevents the air from escaping the tank, canister could be clogged,canister filter may need replacement,electrical connection to the close valve may be open,canisterf might be damaged,purge valve from canister might be clogged,vent hoses might be clogged, the vent hose could be clogged, or the vent hose may have a kink. all this is caused by overfilling the gas tank, getting that last drop of gas in the neck of the fill tube.
good luck!

Aug 11, 2011 | 2005 Nissan Titan

2 Answers

OBD code P0449

that dtc is for evap system vent valve solenoid circuit. the computer is having a problem opening or closing that solenoid (a kind of electric motor that in this case moves to allow or prevent evaporated fuel to leave a canister that captures it) and it's letting you know that it has this problem because proper operation of that system is important to the emissions level of the vehicle. it also contributes to better fuel economy so you probably do want to fix it. the quick and easy way to deal with it is to replace the evap canister vent valve and hope that it wasn't the wires in between that part and the enigne computer that were causing the problem. your tahoe is new enough that this is probably a good guess, the wires are probably good. just a tip, when you put fuel in your vehicle stop when the pump quits the first time. if you keep pumping fuel into it you can fill the evaporative canister and evap system with fuel and the little electronic parts aren't made to take being submerged in raw gasoline. hope that helps

Jun 04, 2009 | 2006 Chevrolet Tahoe

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