Subaru Outback Forums banner
  • Our 4th of July contest is live! Enter HERE for your chance to win a $400 Walmart gift card.
  • Hey everyone! Enter your ride HERE to be a part of this month's Outback of the Month Challenge!

0420

  1. Gen 3: 2005-2009
    Hi friends, I recently had my first run-in with the infamous P0420 code (Catalyst System Efficiency Below Threshold) on my 2006 Outback 2.5 Limited. The CEL has been on with the P0420 code for probably about a month now. At first, it was intermittent and would sometimes go off on its own (I...
Top