# Trouble code troubles

**URL:** <https://community.cartalk.com/t/trouble-code-troubles/19847>\
**Category:** Maintenance/Repairs\
**Created:** [September 21, 2008, 7:30pm UTC](https://community.cartalk.com/t/trouble-code-troubles/19847 "2008-09-21T19:30:04Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![weekendwrench](https://avatars.discourse-cdn.com/v4/letter/w/ad7895/32.png) [@weekendwrench](https://community.cartalk.com/u/weekendwrench)\
**Post date:** [September 21, 2008, 7:30pm UTC](https://community.cartalk.com/t/trouble-code-troubles/19847/1 "2008-09-21T19:30:04Z")

</div>

I have a 2001 Subaru Outback. It recently started throwing two codes, P0328 and P0420. It is also idling rough, sluggish on the highway and gas mileage is going down. I changed the plugs and wires but that does not seem to help. Whats up with the family chariot?

---

<div class="post-metadata">

**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:** [September 21, 2008, 10:06pm UTC](https://community.cartalk.com/t/trouble-code-troubles/19847/2 "2008-09-21T22:06:06Z")

</div>

Duplicate post