Evap Emissions circuit open, what to look at next?

kenaisteve · Post by **kenaisteve** » 28 Feb 2010, 12:58

Hi,
I have a '01 S60 with a 2.4t. The check engine light code is P0447 which says: evap emission control circuit open

According to my Haynes manual, there is an evap solenoid valve mounted on the radiator. I found it, and checked it out as follows:
- two hoses connected to it do not appear to have leaks
- wire harness plugged in tight, I sprayed electrical contact cleaner on it to be sure.
- when solenoid was disconnected, the hose ports are normally shut. Ohm meter reads 195 ohms. Applied 12v. and solenoid clicked, hose ports are open.
- started car with plug disconnected, read voltage ok on plug.

So I'm thinking it's not that. Where to next? Is there maybe another valve on the fuel cannister? Or am I looking in the wrong place?

Thanks.

Georgeandkira · Post by **Georgeandkira** » 28 Feb 2010, 17:15

Hello, I've read there is a similar valve on or very near the gas tank couplings (where the inwards connect with the electrics and tubing). I do not know. Kira

apollo5 · Post by **apollo5** » 01 Mar 2010, 12:33

found this on ipd's site under s60's. I just copy/paste for you as I have not done this myself.

Are you getting P0442 Small Evap Leak, Well then 90% chance that this hose is causing it. This is also called a J hose because of the design. It fails because the rubber cracks where it fits over the connection on the Charcoal canister ( Left side of canister connection. To replace it you have to drop the exhaust pipe, take the left rear tire off and remove /drill a rivet that holds the aluminum heat deflector ( 2 rivets there) and 2 speed nuts. Once you have that removed then you have to disconnect the front connector on the canister, if you have a set of picks that helps. I tried to get the canister off the rear axle but didn't have success. Also I dremel with a cut of wheel to cut the old clamps off. Be careful when you cut the clamps off that you don't go to deep. If you do then you ruin the canister. It is a fun job on your back in the driveway. This job at Volvo would cost almost $300- $400 between diagnoses, smoke test and at least 2 hours of labor. After you finished and put everything back, the light will go off after 4 or 5 trips. Good luck.

kenaisteve · Post by **kenaisteve** » 01 Mar 2010, 13:52

No, I haven't seen the p0442 code at all. Just the p0447. And because this fault is described as "Evap Emission control circuit open" it leads me to think it's electrical based, not hose based. That's why I was wondering if there was another solenoid somewhere else like on the cannister. Dropping the muffler to get to the cannister doesn't sound like fun. Thats why I was hoping someone else may know where to definitely go look before I go on a fishing expedition.

Oh well.

Post by **jblackburn** » 01 Mar 2010, 14:27

Is there maybe another valve on the fuel canister

There is indeed. At least on an S70, which hopefully is similar enough to your S60 by design that they wouldn't change it. Check the elbow at the canister first, and the rest of the line running up under the car to the front purge valve. If you see no problems there, then back to the canister and the valve that sits on top of it.

This may or may not help you:
https://www.matthewsvolvosite.com/forums ... =1&t=27538