Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

2000 Forester P0446 Code


  • Please log in to reply
6 replies to this topic

#1 rusty1

rusty1

    New User

  • Members
  • PipPip
  • 17 posts
  • Upstate

Posted 02 January 2006 - 07:06 PM

Got the code after buying Actron scanner to investigate cel. Cleared it and it came back immediately. Checked for 12v at connector for the vent control solenoid valve, no problem. Removed the solenoid valve/filter canister assemble and bench checked the solenoid valve by applying 12v from a battery charder to the connector terminals, At first chattery then seemed to be working right, but when returned to vehicle cel back on after clearing.

Wondering if I should go ahead and replace the valve anyway or if i bench tested it correctly or if i have the right part to be checking for that code.

TIA.

#2 ferret

ferret

    Subaru Nut

  • Members
  • 666 posts
  • Northern NJ

Posted 02 January 2006 - 09:16 PM

P0446 means the ECU hasn't detected the 12v coming back thru the Drain Valve Solenoid before it activates (grounds) it. This is at pin a10 of the ECU. If you checked the correct valve/solenoid, then I would suspect either a poor connection at one of the conectors or a damaged wire. You can start at the solenoid connector itself and either work your way to the Main relay(if 12v is missing) or back to the ECU (if the 12v was present at the solenoid return side).

The Manual calls P0446 Vent Valve low.....the attached diagram calls it the Drain Valve

#3 rusty1

rusty1

    New User

  • Members
  • PipPip
  • 17 posts
  • Upstate

Posted 02 January 2006 - 10:21 PM

Thanks for the diagram, the part number I'm working with is 42084FA120. Just to be sure, does this agree with your info?

#4 rusty1

rusty1

    New User

  • Members
  • PipPip
  • 17 posts
  • Upstate

Posted 06 January 2006 - 09:03 AM

Thanks again, Ferret.

BTW , where did you get the diagram? Looks like something online.

#5 ferret

ferret

    Subaru Nut

  • Members
  • 666 posts
  • Northern NJ

Posted 06 January 2006 - 09:50 AM

I have a few vehicles on CD.

#6 dakos

dakos

    New User

  • Members
  • PipPip
  • 26 posts
  • Toronto

Posted 16 October 2009 - 02:05 PM

hi,
i'm getting same issues but i can't locate the canister and solenoid...i just got the 2000 forester which is a little bit different as engine components locations than my 99 forester...any help will be more than appreciated, pictures or a diagram.
thanks a lot!

#7 dakos

dakos

    New User

  • Members
  • PipPip
  • 26 posts
  • Toronto

Posted 12 December 2010 - 04:00 PM

hi,
could the P0446 generate a missfire on all 4 cylinders ? as the weather got cold the car runs really bad and the missfire codes for all 4 cylinders came up beside the p0466 code. the whole summer and fall the car was running fine even the code was there but now since the temperatures are dropping below - C the car runs bad...:confused:
thanks a lot.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users