Warning: Function ereg() is deprecated in ..../includes/class_postbit.php(345) : eval()'d code on line 4

Warning: Function split() is deprecated in ..../includes/class_postbit.php(345) : eval()'d code on line 19

Warning: Function ereg() is deprecated in ..../includes/class_postbit.php(345) : eval()'d code on line 4

Warning: Function split() is deprecated in ..../includes/class_postbit.php(345) : eval()'d code on line 19

Warning: Function ereg() is deprecated in ..../includes/class_postbit.php(345) : eval()'d code on line 4

Warning: Function split() is deprecated in ..../includes/class_postbit.php(345) : eval()'d code on line 19
Trouble Code P0420
Results 1 to 3 of 3

Thread: Trouble Code P0420

  1. #1
    Noobinator
    Join Date
    Nov 2011
    Posts
    1
    Rep Power
    0

    Default Trouble Code P0420

    Hi Subaru Community,

    Trouble Code P0420, Catalyst System Efficiency Below Threshold, on a 2002 Impreza, 2.5TS.

    Replaced both oxygen sensors up and downstream, have heard a rumour it could be the catalytic converter. Can anyone confirm or deny, or personal experience?

    Any advice would be appreciated, thanks in advance

  2. #2
    TSF Top Poster
    Join Date
    Oct 2011
    Location
    San Francisco Area
    Posts
    105
    Rep Power
    0

    Default

    the p0420 is an ongoing problem, go to the dealership and see if you are covered for warranty replacement...the cat IS the problem.

  3. #3
    TSF Contributor TOPSPEEDLABS's Avatar
    Join Date
    Sep 2011
    Location
    CONNECTICUT
    Posts
    67
    Rep Power
    0

    Default

    had the same problem on my first 2002 wrx. ended up being the catalytic converter.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •