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Trying to determine any relation with a p0420 code. once
trying to determine any relation with a p0420 code. once warmed up I have to crank the engine and when I count to 5 it starts. I had another 400 code indicating the cat. the codes come and go 2005 alt… read more
ricardo hohl
ricardo hohl
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P 420 code failed emmisions, P0420 and, titan 2004, Noting
Noting just researching before I take it to a garage so far I have found out The average cost for a Nissan Titan Catalytic Converter Replacement is between $2039 and $2311. Labor costs are estimated between $352 and $444 while parts are priced between $1687 and $1867. … read more
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2002: 2002 nissan altima v6 i had misfires , finally
2002 nissan altima v6 i had misfires for awhile, finally got around to fixing them...now a week later i have a p0420 code, i was told its something with the catalytic convertor...can someone please te… read more
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Greeting, Were is the rear O2 sensor located on 2004 Nissan Altima, receiving P0420 cod
Greeting, Were is the rear O2 sensor located on 2004 Nissan Altima, receiving P0420 code. car had 120K thanks… read more
Ron Z.
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2005 Nissan Altima: check engine light..emissions..car has diagnostics
i am working on a 2005 Nissan Altima, 2.5 engine, car runs fine, but has check engine light. we live in a county where emissions must pass to be inspected. car has diagnostics p0420 catalyst efficienc… read more
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I have a 2007 Altima. Runs great. Check engine light is on.
I have a 2007 Altima. Runs great. Check engine light is on. Dealer says it is catalytic converter. Will cost $900. Is there any danger to the engine to not replacing it? Seems earlier Nissans had that… read more
Ron Z.
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2005 nissan frontier: check engine light..mileage, performance, etc.)
What is th emost likely casue of a P0420 code on my 2005 Nissan Frintier? The check engine light has been on with no apparent adverse effects (mileage, performance, etc.) since February of this year. … read more
Ron Z.
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2004 nissan altima: that keeps setting a po420 and po 462 code what
i have a 2004 nissian altima that keeps setting a po420 and po 462 code what does this mean?… read more
Steve7654
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2003 Nissan Altima: dealership..warranty..o2 sensor..p0420 code
My son bought a 2003 Nissan Altima from a Subaru dealership. Under the thirty warranty period they replaced the O2 sensor. Now the vehicle has the p0420 code and making a terrible baffle noise with po… read more
Ron Z.
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Nissan Altima: Service Engine soon..p0420 error (Catalytic error)
Hi. I'm own a Nissan Altima 2005 (97k miles run) car and I'm getting "Service Engine soon" error. When I took it for a check, it said P0420 error (Catalytic error). Where can I get this fixed? I live … read more
Ron Z.
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1998 Nissan Altima: light came..catalytic converter to the tune
About 2 weeks ago I had the air conditioning compressor replaced on my 1998 Nissan Altima with 150000 miles. Several days later the malfunction indicator light came on. I took it back to the same mech… read more
Ron
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2000 NISSAN SENTRA: P0420..THIS THE O2 SENSOR OR..CATALYTIC CONVERTER
I HAVE A 2000 NISSAN SENTRA 1.8 WITH A P0420 ENGINE CODE. IS THIS THE O2 SENSOR OR THE UPSTREAM CATALYTIC CONVERTER?… read more
Ron Z.
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2006 nissan altima: i am getting code 420 on my scanner any thoughts
i have a 2006 nissan altima i am getting code 420 on my scanner any thoughts i can not find that code in my book… read more
Ron Z.
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2002 nissan Altima: P0420..The manual is telling me
I have a 2002 nissan Altima and just got P0420 code. The manual is telling me that its the cat bank 1. Can some one please explain a bit further for me?… read more
Dan
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code po420 2003 altima cat efficency below threshold on bank
code po420 2003 altima cat efficency below threshold on bank 1, which sensor would this be… read more
Ron Z.
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Nissan Altima: GXE..emission test due..p0420..new catalytic converter
My Nissan Altima 2001 GXE Ltd Edition has failed emission test due to code P0420. Can someone advise if I will HAVE TO get a new catalytic converter or something cheaper can be done ?… read more
karrs2fix
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2003 ALTIMA: SERVICE ENGINE SOON..CONVERTER..THE CAR DRIVES PERFECT
MY 2003 ALTIMA HAS 143000 MILES ON IT AND THE SERVICE ENGINE SOON JUST CAME ON..A MECANIC TOLD ME FIRST IT WAS THE CATALITYC CONVERTER SENSOR THEN HE SPOKE TO THE BOSS AND HE SAID IS THE CONVERTER..WH… read more
BigBob
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2002 Nissan Altima: four cylinder, manual transmission..leaks
2002 Nissan Altima, four cylinder, manual transmission, uses excessive oil. No sign of leaks or burning of oil. Where is the oil going? Car has 120000 miles. Are there any technical service bulletins … read more
Jerry
Jerry
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used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

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SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

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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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