engine check light on.
#1
Registered User
Thread Starter
Join Date: Oct 2006
Location: NC
Posts: 268
Car Info: 05 wrx @ stage 2
engine check light on.
so this has been going on for about two months now.my check engine light will come on for a few days the tunr off.its really starting to **** me off.i went to the dealer to day and they cant look at it till tuesday morning. did vechile scan and this code came up P0420 Catalyst Efficiency Below Threshold,cansome one tell me what it means and how i can fix it.
#5
Registered User
Join Date: Feb 2007
Location: Redding, CA
Posts: 4
Car Info: 03 Outback, 04 WRX, 06 LGT
When I was catted, I had two episodes with that problem. The both times the dealer reset the code first and sent me home. The code popped back up within a few days typically. They then replaced the O2 sensor and sent me home. Again, the code came back. Then they replaced the catalytic convertors. Viola, the code went away. If I had no warrantee, the cats would have cost me in the neighborhood of $500 as I recall. Now I am catless and my *almost new stock catback system sits in the shop wrapped in plastic!
#6
Registered User
Join Date: Dec 2005
Location: Chesapeake Beach,MD
Posts: 135
Car Info: Vishnu up-pipe, 5/64" mod
Originally Posted by colorado_sport
no i am not.i also notice that the check light only goes on when im at littel less than half tank.when i fill up it goes off.i think i got bad gas a while back.
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