# Forester po457

**URL:** <https://community.cartalk.com/t/forester-po457/70008>\
**Category:** Maintenance/Repairs\
**Created:** [December 16, 2011, 7:07am UTC](https://community.cartalk.com/t/forester-po457/70008 "2011-12-16T07:07:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jenkinskg](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@jenkinskg](https://community.cartalk.com/u/jenkinskg)\
**Post date:** [December 16, 2011, 7:07am UTC](https://community.cartalk.com/t/forester-po457/70008/1 "2011-12-16T07:07:57Z")

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I am getting error code po457  
Evaporative emissions error, I am told the canister purge valve could be bad.

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**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\
**Post date:** [December 16, 2011, 7:27am UTC](https://community.cartalk.com/t/forester-po457/70008/2 "2011-12-16T07:27:13Z")

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Well all it really means is that there’s a leak. So the first thing to do - because its free - is clean & inspect the gas cap & end of the filler neck & put it back on tightly. The next is to inspect all of the vacuum lines for the evap system. If that’s not something you will get into & will be paying someone then the most likely route to a quick diagnosis is a smoke test.

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**Author:** ![jenkinskg](https://avatars.discourse-cdn.com/v4/letter/j/e79b87/32.png) [@jenkinskg](https://community.cartalk.com/u/jenkinskg)\
**Post date:** [December 20, 2011, 5:07pm UTC](https://community.cartalk.com/t/forester-po457/70008/3 "2011-12-20T17:07:46Z")

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I have looked at all hoses I can see, the code only comes up once a month sometimes less.  
But when my mom borrowed it and drove 5 miles it came on right away

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**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\
**Post date:** [December 20, 2011, 6:28pm UTC](https://community.cartalk.com/t/forester-po457/70008/4 "2011-12-20T18:28:39Z")

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So how does the gas cap gasket look? The end of the filler neck? You’re not trying very hard to get help here.

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**Author:** ![RemcoW](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/remcow/32/2471_2.png) [@RemcoW](https://community.cartalk.com/u/RemcoW)\
**Post date:** [December 20, 2011, 7:37pm UTC](https://community.cartalk.com/t/forester-po457/70008/5 "2011-12-20T19:37:12Z")

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Should that^ all be okay and your purge solenoid still be suspect, you can check it pretty easily by unplugging it putting a clean rubber hose on one end so you can blow into that and applying 12V to it.  
Attached are two files: one is its location on an 06/07 forester, the other an 03-05