what would cause a 2006 subaru impreza with only 32,000 miles on it to need a new catalytic converter?


Asked by Dec 18, 2014 at 06:10 PM about the 2006 Subaru Impreza

Question type: Maintenance & Repair

Purchased from first owner recently.  The service engine soon light came on after having it
for just a few days.  I took it to the dealer and the code that came up they say indicates
that the catalytic converter needs replacing.  Everyone is surprised at this because there
is only 32,000 miles on this car.

4 Answers

Mark Grignon

Did you find out what code they pulled? There is no true code to my knowledge that indicates a bad catalytic converter. Is the vehicle running Okay? Any loss of power on acceleration or up hills?


There's a chance that the first owner ran the car when it was running bad, like fouling plugs, whatever to cause carbon to plug up the little honeycombs inside the converter. I doubt anyone would pull the converter and check inside to see if it could get away with just a cleaning.


I would be suspicious of that. I would run some seafoam through the engines intake then add a can to the fuel tank, find a clear stretch of road and wind it up, what we call "Blowing out the carbon" if you see stuff blowing out the tailpipe keep doing this until it quits. You can find more information on blowing out the carbon on you tube. Watch the tach closely, you don't want to over rev and blow the engine. If you have never done this maybe some of your friends have done it and can show you the in's and out's on doing this. After it is all cleaned out have the codes cleared and drive as you normally would to see if the check engine light stays off. If it comes back on with the same code then it could be a bad catalyst.


The code they pulled is P0420 and I recently had the fuel induction service done to it, which I was hoping would do the trick, but the "check engine" light is back on. :(

Your Answer

Add photo

Related Questions

  • I have a 2001 Subaru Impreza 2.2 L w/103k miles and it has some kind of issue that I can't figure out... 2 answers

    Okay so, every time I speed up be it low gear or high gear my car lags like crazy... It feels like not enough gas is being fed to the engine. I asked a buddy of mine and he said the fuel pump might ...

    2001 Subaru Impreza L Coupe


    Maintenance & Repair

  • check engine light and cruise control. 2 answers

    I have a 2006 subaru impreza and every time my check engine light comes on my cruise control light will blink and not function properly. What is the reason behind that?

    2006 Subaru Impreza 2.5i


    Maintenance & Repair

  • The Engine Check light goes on and off on my Subaru Impreza 2006 model. What does that mean 1 answer

    The Engine Check light goes on for a day then disappears for a day and so on. This has been going on for four days. The car technician said that there may be a problem with the catalytic converter. ...

    2006 Subaru Impreza


    Maintenance & Repair


    The CVT transmission on my 2012 Subaru Impreza completely failed at 55,000 miles and luckily was replaced under the 60,000 mile powertrain warranty. It was $7500.00 job ! My 5th Subaru and the third...

    2012 Subaru Impreza 2.0i Limited Hatchback


    Maintenance & Repair

  • 2003 Subaru catalytic 3 answers

    I need a new catalytic for my car. Can I take one off a 2000 outback an it fit my 2003 legacy?

    2003 Subaru Legacy L Wagon


    Maintenance & Repair


Looking for a Used Impreza in your area?

CarGurus has 8,290 nationwide Impreza listings starting at $1,995.


Search Subaru Impreza Questions

Subaru Impreza Experts

#1 FordNut
Reputation 480
#2 Nick Eidemiller
Nick Eidemiller
Reputation 420
#3 TheSubaruGuruBoston
Reputation 360
View All

Related Models For Sale

Used Subaru Impreza WRX"
43 Great Deals out of 1,348 listings starting at $2,500
Used Subaru Impreza WRX STi"
34 Great Deals out of 605 listings starting at $8,977
Used Subaru Outback"
422 Great Deals out of 30,431 listings starting at $1,295
Used Subaru Legacy"
246 Great Deals out of 18,022 listings starting at $1,300
Used Subaru Forester"
360 Great Deals out of 19,905 listings starting at $1,099
Used Honda Civic"
1,173 Great Deals out of 59,023 listings starting at $1,300
Used Mitsubishi Lancer Evolution"
20 Great Deals out of 808 listings starting at $16,995
Used Mazda MAZDA3"
482 Great Deals out of 25,014 listings starting at $1,499
Used BMW 3 Series"
1,696 Great Deals out of 39,944 listings starting at $888
Used Honda Accord"
1,308 Great Deals out of 78,748 listings starting at $1,395
Used Toyota Corolla"
1,470 Great Deals out of 67,841 listings starting at $1,295

Used Cars For Sale

2016 Subaru Impreza For Sale
5 Great Deals out of 3,372 listings starting at $16,500
2015 Subaru Impreza For Sale
33 Great Deals out of 632 listings starting at $12,999
2014 Subaru Impreza For Sale
40 Great Deals out of 764 listings starting at $11,900
2013 Subaru Impreza For Sale
66 Great Deals out of 1,175 listings starting at $9,495