Question about 2008 Saturn VUE

3 Answers

My check engine light is on and I am getting codes P0449 and P0455. What is this and how do i fix it?

Posted by on

Ad

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Saturn Master
  • 3,854 Answers

The p0455 is for a leak concern and if that was the only code I'd say give the cap a shot. However the p0455 is most likely just a side effect of the P0449. The P0449 is a test that is run on the vent solenoid circuit to check the electrical functions in basic terms. The computer is putting out voltage amount X and in a properly functioning circuit it knows it will see voltage amount Y come back. It isn't coming back as what it expects to come back at so there must be something electrically wrong with the vent circuit. And of course if the vent doesn't work you get a large leak. If we are just throwing parts at trucks the logical one for you is a vent valve. Since your Vue is a 2008, most likely there is a good chance that it's covered under the emission warranty which is 5 years.
Thank you for using fixya. and be safe.

Posted on Jul 07, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Saturn Master
  • 17,970 Answers

P0449 - Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

The repair suggested is to replace the canister vent solenoid and relocate it to a position near the fuel filler neck. This may help but there is know way to tell for sure if this will correct your particular issue.


P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)

What does that mean?
This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms:
You likely won't notice any drivability problems.

Causes:
A code p0455 most likely means one or more of the following has happened:
* A loose or improperly affixed gas cap
* A non-conforming gas cap (i.e. not factory/original brand)
* Other leak or damaged piece in EVAP system

Possible Solutions:
With a p0455, the most common repair is to:
* Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
* Otherwise, replace the gas cap, and/or
* Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary


Tell us news (remember rated this).

Posted on Jul 07, 2010

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Saturn Master
  • 22,219 Answers

Rough guess is the lambada sensors ,the oxygen sensors in the exhaust manifold

Posted on Jul 07, 2010

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

  • 262 Answers

SOURCE: Getting codes P0455 and P0449. From what I read,

The vent solenoid valve has been redesigned to correct the problem you are having. I would recommend purchasing the dealer component.
I am not aware of any aftermarket parts suppliers.

Posted on Feb 25, 2010

  • 265 Answers

SOURCE: 2005 Saturn Relay3 check engine light is on and

Find a good forum on the internet that deals with your car.
Here is one with instruction on how to fix your problem

Posted on Mar 01, 2010

techbuster
  • 5081 Answers

SOURCE: My 2005 Tahoe has engine light codes P0449 &

The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.


Probable Causes
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid

Posted on Aug 24, 2010

  • 743 Answers

SOURCE: 2005 chevy 1500 silverado eng.

P0449 is the evap vent valve solenoid circuit malfuntion.
P0455 is an evap gross leak
Perhaps the gross leak code has to do with the vent valve. Find the vent valve. It should be near a rectangle evap canister. Maybe under the bed. The small vent line from the fuel tank will go to it. The solenoid is near the cansiter. With the key off the valve will be open. With the key on it should be closed. You may try disconnection the hose and blow through it with both key off and on and see if air will pass through. If the valve has died and is stuck open, that can be the huge leak.

If it is not the leak then a smoke machine should be used. Easier than searching the lines for bad o-rings, splits, or whatevers.

Posted on Sep 02, 2011

  • 202 Answers

SOURCE: 1999 lincoln navigator obd code p0455

Either the fuel cap, or the evap solenoid on the charcoal canister. I'd start with the fuel cap.

Posted on May 27, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Code p0455 on envoy 2004


large evap leak --check gas cap that it is on --look under truck at rear of fuel tank by spare tire and check the evap canister and hoses the following link will assist you
https://www.obd-codes.com/p0455 How to Fix Check Engine Light P0455 Emissions Purge Valve Replacement How to Fix Check Engine Light P0455 Emissions Purge Valve Replacement

Sep 19, 2016 | Cars & Trucks

1 Answer

What are the probable causes of DTC P0449?


P0449 - OBD-Codes.com

www.obd-codes.com/p0449
Detailed information on diagnosing and repairing a P0449 DTC code which refers ...P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit ... OBD-IITrouble Code Technical Description ... 2004 Chevrolet Tahoe 4.8L p0449

EVAP Code P0449 - YouTube

? 16:47
https://www.youtube.com/watch?v=AlfOSMmisPg
Mar 13, 2013 - Uploaded by realfixesrealfast
Here is a description and how to diagnose EVAP code P0449. ...Up next. Quick Easy Fix P0449 P0455 Evap Codes on ChevySilverado 2007 ...

Quick Easy Fix P0449 P0455 Evap Codes on Chevy ...

? 7:06
https://www.youtube.com/watch?v=aL5KmV1d26Y
Dec 27, 2013 - Uploaded by wagslick
Quick Easy Fix P0449 P0455 Evap Codes on Chevy Silverado 2007 .... Well clearing the error codes at auto store will not prevent it come ...

Solving a P0449 Engine Code on a 2008 Chevy Impala ...

pressanykey.simplyahobby.com/.../solving-a-p0449-engine-code-on-a-2...

Jan 07, 2016 | 2004 Chevrolet Chevrolet Impala

1 Answer

Check engine light on, the code is P0449 on a 2009 chevy treverse need a wiring diagram How to fix it


Hello there

Lots of people seem to get this code.

Electrical diagram is included in the Haynes Manual (which EVERYBODY should have for their car !!) Available here.http://www.haynes.com/products/?searchType=vehicleApplicationSearch2&searchEnd=yes&sfID1=&sfID2=&sfID3=&year=2009&make=Chevrolet&model=Traverse&x=22&y=11


http://engine-codes.com/p0449_chevrolet.html
This says the vent valve/solenoid in the evaporative emission control system.

Something similar here which will be of use to you.
http://www.gm-trucks.com/forums/topic/82504-check-engine-light-code-p0449/
Vent Solenoid problem ...changed seems to have cured it.

Sep 21, 2014 | 2009 Chevrolet Traverse

1 Answer

My check eng. light came on and I had it checked and the two codes p0455 &p0449 showed up, what should I do about this?


P0455 stands for evap emissions detection leak and p0449 stands for evap emissions vent control circuit. You should go to a parts store and see if your able to purchase and install. Best of luck!

Feb 27, 2012 | 2007 Buick LaCrosse CXL Sedan

1 Answer

2005 chevy 1500 silverado eng. light on ran code p0455 and p0449 how to fix the problem. and how much work it takes. thanks STEVE.


P0449 is the evap vent valve solenoid circuit malfuntion.
P0455 is an evap gross leak
Perhaps the gross leak code has to do with the vent valve. Find the vent valve. It should be near a rectangle evap canister. Maybe under the bed. The small vent line from the fuel tank will go to it. The solenoid is near the cansiter. With the key off the valve will be open. With the key on it should be closed. You may try disconnection the hose and blow through it with both key off and on and see if air will pass through. If the valve has died and is stuck open, that can be the huge leak.

If it is not the leak then a smoke machine should be used. Easier than searching the lines for bad o-rings, splits, or whatevers.

Sep 02, 2011 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

I got a '06 Trailblazer, LT series and L6 engine. I got the check engine ON with P0449 and P0455 codes and the MIL On too. I change 2 solenoids (Purge and Vent), clear the codes with mine codes reader...


maybe aftermarket products--------disconnect batt and touch neg and pos cables together-after few minutes reattach and start car-----as long as its runnin fine-cause its just evap emmiss issue

Aug 09, 2011 | Chevrolet TrailBlazer Cars & Trucks

2 Answers

P0449 and P0455 error code 2008 2wd gmc envoy 30,203 miles


P0449 - Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

P0455 - Evaporative Emission Control System Leak Detected (no purge flow or large leak)

Both are refer at EVAP system; other EVAP DTCs: P0440 - P0441 - P0442 - P0443 - P0446 - P0453 - P0455 - P0456

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.
Causes: most likely means one or more of the following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system

Possible Solutions: the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary


Hope helps.

Apr 23, 2011 | 2008 GMC Envoy

1 Answer

My 2005 Tahoe has engine light codes P0449 & P0455. What should I replace first?


The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.


Probable Causes
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid

Aug 24, 2010 | 2005 Chevrolet Tahoe

2 Answers

Getting codes P0455 and P0449. From what I read,


The vent solenoid valve has been redesigned to correct the problem you are having. I would recommend purchasing the dealer component.
I am not aware of any aftermarket parts suppliers.

Feb 25, 2010 | 2005 Chevrolet Avalanche

Not finding what you are looking for?
2008 Saturn VUE Logo

4,766 people viewed this question

Ask a Question

Usually answered in minutes!

Top Saturn Experts

yadayada
yadayada

Level 3 Expert

76673 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8531 Answers

Are you a Saturn Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...