Subaru engine light on.

Asked by Feb 27, 2015 at 01:07 PM about the 2010 Subaru Forester 2.5 X Premium

Question type: Maintenance & Repair

During the cold months my Forester's engine light will come on along with flashing cruise.  
Code is for bad converter.  0420 I think.  The light stays on for 50 to 80 miles and then
goes off and will come back on after another 50 miles.  Any clues as to why?  When the
weather warms up the problem disappears.  It is very annoying; I thought Subaru's were
built for cold weather.

1 Answer

7,335

You can search around on forester or Subaru forums (like nasioc) for the fix. The flashing is to warn you that your converter may be harmed by the way the engine is running and not completely burning all / most of the fuel in the air stream. I don't know if it is one issue or several as I've not done any real amount of research on the emissions issue you are having.

Your Answer

Subaru Forester Experts

  • #1
    Nick Eidemiller
    Reputation
    4,000
  • #2
    walth
    Reputation
    3,480
  • #3
    lifeson34
    Reputation
    2,810
View All

Related Models For Sale

Used Subaru Outback
351 Great Deals out of 35,260 listings starting at $999
Used Honda CR-V
714 Great Deals out of 62,186 listings starting at $1,495
Used Toyota RAV4
633 Great Deals out of 61,512 listings starting at $1,995
Used Subaru Impreza
189 Great Deals out of 20,736 listings starting at $1,333
Used Subaru Legacy
207 Great Deals out of 14,267 listings starting at $1,800
Used Toyota 4Runner
343 Great Deals out of 29,180 listings starting at $1,500
Used Ford Escape
1,166 Great Deals out of 106,833 listings starting at $700
Used Toyota Highlander
543 Great Deals out of 42,245 listings starting at $2,009
Used Toyota Tacoma
566 Great Deals out of 40,724 listings starting at $2,500
Used Subaru Impreza WRX
43 Great Deals out of 1,185 listings starting at $4,000
Used Nissan Rogue
766 Great Deals out of 73,899 listings starting at $1,999
Used Jeep Grand Cherokee
888 Great Deals out of 71,569 listings starting at $900

Used Cars For Sale

2018 Subaru Forester For Sale
16 Great Deals out of 28,483 listings starting at $20,225
2017 Subaru Forester For Sale
55 Great Deals out of 1,408 listings starting at $16,595
2016 Subaru Forester For Sale
25 Great Deals out of 1,006 listings starting at $12,990
2015 Subaru Forester For Sale
98 Great Deals out of 2,484 listings starting at $10,990
2014 Subaru Forester For Sale
23 Great Deals out of 772 listings starting at $7,990

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.