P0496 on 08 Saturn Vue Xr 3.6L

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Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Wed Mar 22, 2017 1:29 pm

Hello I have a Saturn Vue Xr 3.6 L I am getting engine code P0496 I have checked and replaced my vet solenoid I also did the test where I disconnect the power connector and a vacuum line there was no suction meaning the solenoid is good but I am still getting the P0496 era code I was told that the fuel tank pressure sensor may be what is causing this light have you had any other vues with the same problem? Also when I fuel up the car won't start I have to give it gas a couple times then it starts up


kev2
Posts: 6512
Joined: Sat Aug 29, 2009 4:24 pm

Re: P0496

Postby kev2 » Wed Mar 22, 2017 3:07 pm

What did you change purge or vent valves?
purge on engine
vent on canister.

when you fuel up - car will not start.
Do you
1) have the duel pump kick off often- need to slowly refuel
2) do you 'top off' attempt to maximize amount of fuel added?

The fuel tank pressure sensor is the messenger so to speak- it is noticing a purge flow (vacuum) during non commanded purge.

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Wed Mar 22, 2017 4:48 pm

I replaced the purge valve on the canister also took the complet thing down cleaned all the dust out in the filter element

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Wed Mar 22, 2017 4:50 pm

When I put gas it don't mater if I put a quarter tank or fill I always have to floor the gas a couple times to start it

kev2
Posts: 6512
Joined: Sat Aug 29, 2009 4:24 pm

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby kev2 » Wed Mar 22, 2017 6:12 pm

I believe the vent valve is on the canister.
The purge valve is on the engine.
need to clear this up As 2 different valves and code is for purge issue.

Item #3
Attachments
purge saturn 3.6.png
purge saturn 3.6.png (106.47 KiB) Viewed 275 times

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Wed Mar 22, 2017 7:16 pm

When I first got the light I had multiple codes the first one I changed was the one on the engine got that from orielys auto parts reset the mil and drove it after like 50-100 miles the light came back on got po469 went back to the auto parts and bought the one that goes onto the canister at the bottom of the car and reset the light once again after driving light popped back on still reading p0469 at that point I gave up figured who care about the light lol , now I'm trying to sell it so I have no choice. It to fix it .

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Wed Mar 22, 2017 7:23 pm

so that's why I was digging into some threads and read that the gas tank pressure sensor may be the cause of that light do u think that's a possibility?

kev2
Posts: 6512
Joined: Sat Aug 29, 2009 4:24 pm

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby kev2 » Wed Mar 22, 2017 8:02 pm

p0469 is a CIRCUIT issue.
P0496 is an non commanded purge event.
I would check the control side wire of the purge valve for shorting to ground..
This situation could cause both codes.
Can you use a wiring diagram and DVOM for checking circuits? We can attach wiring dia.

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Wed Mar 22, 2017 8:07 pm

Yes I have a volt meter , man can't thank u enough for ur help

kev2
Posts: 6512
Joined: Sat Aug 29, 2009 4:24 pm

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby kev2 » Thu Mar 23, 2017 6:18 am

diagram #13 circuit 428, the D-GN/WH wire - check for short to ground - tug pull shake harness trying to simulate road vibration operating conditions. You want to ohm wire from purge to PCM. If it were to go to ground both conditions (codes) would set.

PS: there are NO added electrical devices ANYTHING modified?

http://www.revbase.com/BBBMotor/Wd/Down ... ?id=153209

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Thu Mar 23, 2017 4:13 pm

Ok so I got under it grabbed the wire seem to be connect properly nothing seemed loose can't trace it till the end as it goes over the gas tank would I be able to test for voltage or some other way where I can test it

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Thu Mar 23, 2017 4:24 pm

Jus checked my mil now getting p0496 and p0449 which is the vent solinoid

Billycocky
Posts: 9
Joined: Wed Mar 22, 2017 12:44 pm
Vehicle: 08 vue xr 3.6

Re: P0496 on 08 Saturn Vue Xr 3.6L

Postby Billycocky » Fri Mar 24, 2017 12:12 pm

I ordered a new solinoid the one on the canister gonna replace it and also got the upgraded plug ...I'll keep u posted thanks again for taking the time to help


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