EVAP purge valve code PO441

ylwgto · Post by **ylwgto** » 21 Jun 2022, 11:18

I've been ignoring and resetting codes PO441, PO442 and PO440 for some time now.

They seem to stay off until hard acceleration at on ramps or when passing. Most recently got the check engine with PO441, PO442 again.

Car seems to run fine, but recently noticed my combined city/hwy mileage (mainly city) has dropped off to 15.6, which is terrible (I think my thermostat is also bad and part is on order).

So, I've read up and it seems the codes indicate a bad gas cap (not the case, the seal looks good) or a bad EVAP purge valve. Should I order this part and replace while I'm working under the manifold for the thermostat repair?

Could the EVAP leak be from elsewhere, like the j-hose, or something else?

Post by **RickHaleParker** » 21 Jun 2022, 15:49

Two most likely:
1. The hose between the induction pipe and EVAP valve is broken, clogged or pinched.
2. The hose between the EVAP valve and canister is broken, clogged or pinched.

Start at the EVAP value and check all the hoses leading off it.

ylwgto · Post by **ylwgto** » 21 Jun 2022, 16:09

Thanks. Any links you know of to DIY for this, or a VIDA scan of the part location?

Post by **RickHaleParker** » 21 Jun 2022, 17:18

ylwgto wrote: ↑21 Jun 2022, 16:09 Thanks. Any links you know of to DIY for this, or a VIDA scan of the part location?

: Componet_Locations_XC90.gif (74.77 KiB) Viewed 204 times

ylwgto · Post by **ylwgto** » 21 Jun 2022, 17:43

thanks. helpful but hard to see any detail. any chance you have a part # for the purge valve and those 2 hoses you mention?

appreciate it!

Post by **abscate** » 24 Jun 2022, 05:11

ylwgto wrote: ↑21 Jun 2022, 17:43 thanks. helpful but hard to see any detail. any chance you have a part # for the purge valve and those 2 hoses you mention?

appreciate it!

Punch in your VIN into this website for parts diagrams amd numbers

https://www.volvopartswebstore.com/prod ... 50373.html

Post by **pgill** » 24 Jun 2022, 12:12

The purge valve is just above the throttle valve

Take a look at the pictures in this post

https://www.freel2.com/forum/topic32245.html

Here is a picture from that link showing the purge valve

Note: I own two 3.2s and I have a purge valve on the shelf and I plan to replace it on my 3.2 that was running rough on a restart recently.

The purge line from the charcoal canister has to be removed to remove the manifold. If that line is broken of the O-rings are leaking you can get the code that you have. Also the purge pump has a air filter that can get clogged and cause problems.

The hose from the purge valve (shown in the picture) will cause a vacuum leak but not a vapor recovery leak. So if that hose is broken you should replace it but don't expect it to fix your check engine light.

Good luck

Paul

ylwgto · Post by **ylwgto** » 29 Jun 2022, 11:49

awesome details, thank you. on my XC90 it appears the EVAP purge valve is not down by the throttle body, but rather hanging off a factory tab behind the upper radiator (at least I think that is it). I am going to tackle this, the thermostat and a faulty oil cooler coolant hose this weekend...all without removing the intake. wish me luck!

Post by **pgill** » 30 Jun 2022, 10:39

Good luck.

The purge valve should be in the location that I showed above.

There are some minor difference in a XC90 3.2 and a S80 3.2 but the purge valve isn't one of those differences.

Take a picture of the part that you are looking at and post it here

Thanks

Paul

ylwgto · Post by **ylwgto** » 03 Jul 2022, 17:44

Did the job today and the code cleared. real PITA to get the intake pipe off the throttle body and replace the vacuum hose from the evap valve to the backside of the throttle, but got it done. thanks for the help!!

the old one was indeed gunked up and dead.