# Subaru outback 2008 AC problem

**URL:** <https://community.cartalk.com/t/subaru-outback-2008-ac-problem/51605>\
**Category:** Maintenance/Repairs\
**Tags:** outback, subaru\
**Created:** [July 10, 2010, 7:02pm UTC](https://community.cartalk.com/t/subaru-outback-2008-ac-problem/51605 "2010-07-10T19:02:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nickoutback](https://avatars.discourse-cdn.com/v4/letter/n/7ab992/32.png) [@nickoutback](https://community.cartalk.com/u/nickoutback)\
**Post date:** [July 10, 2010, 7:02pm UTC](https://community.cartalk.com/t/subaru-outback-2008-ac-problem/51605/1 "2010-07-10T19:02:14Z")

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My 2008 outback has similar problem. The AC works for 45 minutes then the vents stop flowing air. If I stop for five minutes or switch the AC off for five minutes the AC and vents work again. I think the core is freezing over and blocking the vents. When you stop the AC the ice melts and opens the vents. There must be a sensor that switches off the AC so that the core defrosts. I had a dehumidifier that had the same problem. I am going to the dealer to get it fixed on warranty on Monday. Does anyone have a similar problem and did the dealer fix it?

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**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\
**Post date:** [July 10, 2010, 7:51pm UTC](https://community.cartalk.com/t/subaru-outback-2008-ac-problem/51605/2 "2010-07-10T19:51:15Z")

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It is typical for the core to freeze if the R-134a refrigerant is low. This will probably be the diagnosis. Let them fix it under warranty, but if it is low, don’t let them just add R-134a and send you home. Have them find the leak while it is still under warranty.