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I got a p0420 code and am getting all types of different
i got a p0420 code and am getting all types of different answers about the catalytic converter replacement options. How many catalytic convers are on the subaru forester 2.5 turbo? … read more
David Craig
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OWNER/MECHANIC
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P0420 code, no noticeable loss of power or fuel efficiency.
P0420 code, no noticeable loss of power or fuel efficiency. … read more
tamaz
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2009 subaru forester has check engine light on and cruise
2009 subaru forester has check engine light on and cruise control flashing & inoperative as well as the anti-skid light is on. Autozone showed that the catalyst system efficiency below threshold (bank… read more
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CHRIS ZAPANTIS
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I have a 2011 Subaru forester with the check engine light.
I have a 2011 Subaru forester with the check engine light. Initially the code was for a misfire so I cleaned the injectors and replaced the spark plugs. However, now I'm getting the P0420 code. Could … read more
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Subaru Outback 2.5L non-turbo: I have a 2005 Subaru Outback
I have a 2005 Subaru Outback 2.5L no turbo. Following the check engine light I'm getting a P0420 code, catalytic efficiency below threshold. I live in New York State and they have adopted California e… read more
Matt
Matt
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Subaru Legacy 2.5I: Have code p0420. Reset it a couple times
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Randall C
Randall C
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Vocational, Technical or Trade Scho
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Subaru Forester: This question is for a 2001 Subaru Forester
This question is for a 2001 Subaru Forester with 250,543 miles on it. In chronological order: 1. Day 1: Drove to lunch. When finished, restarted car and ran rough with knocking, like dropping one or t… read more
tamaz
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Subaru: good morning i have a 97 subaru legasy outback,automatic,
good morning i have a 97 subaru legasy outback,automatic, awd 2.5 liter. there is a code i need help with. its po420. thanks.… read more
Kevin C.
Kevin C.
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High School or GED
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2005 Subaru Forester: check engine came..catalytic converter
I have a 2005 Subaru Forester. When the check engine came on I was told it indicated a catalytic converter problem. I then had a universal cat installed. The check engine light goes on (sometimes off)… read more
Ron Z.
Ron Z.
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2001 outback: a check engine light..code P0420..catalyst system
I have a 2001 outback and have a check engine light on, code P0420 mod $E1 catalyst system efficiency below threshold bank 1, how hard of a fix is this? I've had it cleared and it's back.… read more
Ron Z.
Ron Z.
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2001 Subaru Forester: month of owning, the cel came on, a few days
I bought a 2001 Subaru Forester 2 months ago and it runs like a top. I'm very happy with it overall. After about a month of owning, the CEL came on, a few days later no CEL. The CEL comes on and off e… read more
Tim Mohr
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ASE MASTER TECH
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Forester: mechanics..our O2 sensor on our 2005 100K mi..light goes
Our mechanics are saying that our O2 sensor on our 2005 100K mi Forester is tripping our idiot light, which also takes-out the cruse control. After about a day or three the idot light goes off and the… read more
Kevin C.
Kevin C.
Subaru Master Tech.
High School or GED
1,727 satisfied customers
po402. car has 5 O2 sensors. Replaced both front and no change.
po402. car has 5 O2 sensors. Replaced both front and no change. Light comes on after 230 miles. Tested rear O2 sensors and they are working. I do not think with 54k miles the cat is bad. Any thoughts?… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
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2006 Subaru Forester: my check engine light went..control light..blink
I have a 2006 Subaru Forester. A couple of months ago my check engine light went on and the cruse control light on the dash began to blink. I took it in for service and was told I needed a new catalyt… read more
George H.
George H.
Subaru Certified Technician
Associate Degree
1,377 satisfied customers
2002 Subaru Forester L: Check Engine Light..catalytic converter
2002 Subaru Forester L 145000 miles Getting Check Engine Light with code for catalytic converter, or O2 sensors or air flow are the listed causes: Subaru dealership says it is the catalytic converter … read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
23,502 satisfied customers
2003 Subaru Outback: check engine light..O2 sensor replaced..converter
2003 Subaru Outback 3.0 with a check engine light code 420, O2 sensor replaced at this location. Why only dealer availability for a converter?… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
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2002 Forester: dealer says..exhaust..my check engine light
My local Subaru dealer says that my 2002 Forester has a code P0420. Also, the exhaust has a pretty pronounced smell. He recommended that I replace the cat, but cautioned that a non-genuine Subaru cat … read more
Mike V.
Mike V.
technician
Subaru and Nissan factory training.
33,352 satisfied customers
Per FIXITMANs recommendation on my previous JustAnswer” question,
Per FIXITMAN's recommendation on my previous “JustAnswer” question, I had a new catalytic converter(s) installed (it has 2). Please review previous question. This was also the recommendation of a prof… read more
BOBBYSS
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Associate Degree
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Meet the Experts:

Kevin C.

Kevin C.

Subaru Master Tech.

1,727 satisfied customers

34 years of Subaru service experience, ASE Master Technician.

George H.

George H.

Subaru Certified Technician

1,377 satisfied customers

ASE Master Tech 15 + Years

Chris(aka-Moose)

Chris(aka-Moose)

Subaru Technician

505 satisfied customers

24 years of experience diagnosing & repairing

Tim Mohr

Tim Mohr

ASE MASTER TECH

453 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Matt

Matt

Engineer

426 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

Paul M ASE Master

Paul M ASE Master

ASE Master Tech

212 satisfied customers

ASE Master Tech 20+ Years

I. Silva

I. Silva

ASE Certified Technician

120 satisfied customers

auto mechanic

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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