# 2001 Forester Check Engine Light **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** forester, engines, subaru, lights\ **Created:** [August 12, 2009, 1:05pm UTC](https://community.cartalk.com/t/2001-forester-check-engine-light/34936 "2009-08-12T13:05:21Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![beau22](https://avatars.discourse-cdn.com/v4/letter/b/97f17d/32.png) [@beau22](https://community.cartalk.com/u/beau22)\ **Post date:** [August 12, 2009, 1:05pm UTC](https://community.cartalk.com/t/2001-forester-check-engine-light/34936/1 "2009-08-12T13:05:21Z")
We have been having a recurring check engine light. The code is always P0422 evac small leak. Here’s a list of repairs so far: replaced vent valve 42084Fa120 Subaru gas cap Subaru Dealer replaced the following parts 2 11044AA633 Gskt cylendar 4 10966AA000 Gskt Spark Plugs 2 13294AA053 Gskt Rocker 10 13271AA071 Washer Rocker 2 14035AA383 Gasket intake 1 13073AA190 Idler Cp Bel 1 13073AA142 PT340292 IDL 1 13085AA080 Idler Cp Bel 1 13033AA042 Adjuster Ay 1 21111AA007 Water Pump 1 21114AA051 Gasket Water 1 21200AA072 Thermostat 1 21236AA010 Thermostat G 2 44011AC030 Gasket 1 15208AA12A Elem CP Oil 1 11126AA000 Gasket 5 12345616 Oil 10W30Q 8.8 Next day the check engine light was back So…found head gaskets leaking and replaced head gaskets under parts warrantee found heads warped - sublet for repair mill and press chk heads Next day the check engine light was back So…replaced faulty electrical coupling. This time the light stayed out for 3 days, but now it’s back. Help us, we love this car! ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [August 12, 2009, 6:00pm UTC](https://community.cartalk.com/t/2001-forester-check-engine-light/34936/2 "2009-08-12T18:00:43Z")
``` I can't say all that was not needed, but much if not most of that list would have nothing at all to do with the code as reported. I suggest that you replace one part. That part is the dealer or whoever is doing this work. Find a good shop. ``` ---
**Author:** ![bennyandthejets](https://avatars.discourse-cdn.com/v4/letter/b/b487fb/32.png) [@bennyandthejets](https://community.cartalk.com/u/bennyandthejets)\ **Post date:** [August 12, 2009, 6:34pm UTC](https://community.cartalk.com/t/2001-forester-check-engine-light/34936/3 "2009-08-12T18:34:19Z")
I’d start with checking the evap cannister lines going to and from charcoal cannister and fuel tank. You might have a slightly loose or cracked vac line, or shutoff valve sitting on the cannister or near it. Sounds like you did a whole lot of preventative maintenance (wow, even shaved the heads), now is the time to start troubleshooting the real problem.