2009 nissan altima p0420 code

Asked by SoMisguided May 11, 2019 at 07:32 PM about the 2009 Nissan Altima 2.5 S

Question type: Maintenance & Repair

First got the code threshold low bank 2. Replaced
the rear catalytic converter and downflow pipe.
About 3 months later got the code again threshold
low bank 1 replaced the 02 sensor and the front
catalytic converter. The catalytic converter was
definitely bad. Its been another 2 months and i
have the code again threshold low bank 1. Any
ideas?  So frustrating.  

1 Answer
64,540

firebird338 answered 4 years ago

Had same problem at one time check engine light comes on put scanner on it says bank one oxygen sensor replaced sensor two days later light comes back on saying bank one oxygen sensor took vehicle to AAA auto center they said needed to replace catalytic converter vehicle running to good for it to be that as far as I was concerned so started using the high octane gas ( 93 and 94 ) instead of the low octane gas ( 87 ) to make a long story short it took ten tank fills and light coming on and going off four times but light is now out and stays out. Still use the ( 87 ) octane gas but not all the time use the ( 89 ) octane gas.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • 2009 nissan altima p0420 code 1 Answer

    First got the code threshold low bank 2. Replaced the rear catalytic converter and downflow pipe. About 3 months later got the code again threshold low bank 1 replaced the 02 sensor and the front ...

    2009 Nissan Altima 2.5 S

    -

    Maintenance & Repair

  • 2010 Nissan Altima code P0420 2 Answers

    Was driving my car home from work last week and it popped the Service Engine light on with code P0420, referencing the catalytic converter. Here is full description: The Catalytic Converter takes t...

    2010 Nissan Altima 2.5 S

    -

    Maintenance & Repair

  • Can code p0420 come on and off on a Nissan Altima 2012 1 Answer

    Can code p0420 come on and off on a Nissan Altima 2012 and showing service engine soon

    2012 Nissan Altima 3.5 S

    -

    Maintenance & Repair

  • P0420 2006 Nissan Altima 4 Answers

    Hi, My check engine light never came on however my car was having issues accelerating when pressing the gas. It slowly picks up then catches and drives perfect. Only when I brake does it take a slo...

    2006 Nissan Altima 2.5 S

    -

    Maintenance & Repair

  • p0420 on Nissan Altima 2.5S 2008 1 Answer

    I had an engine noise coming out from my Altima for almost 6 months but my car mechanic told me to ignore it as long as vehicle noise doesent bother me. After around 6 months, once i was running low...

    2008 Nissan Altima 2.5

    -

    Maintenance & Repair

Shortcuts

Search Nissan Altima Questions

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    3,250
  • #2
    GuruB42YD
    Reputation
    2,420
  • #3
    GuruSY3ZL
    Reputation
    2,250
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Honda Accord
47 Great Deals out of 997 listings starting at $2,995
Used Toyota Camry
57 Great Deals out of 1,093 listings starting at $2,500
Used Nissan Maxima
13 Great Deals out of 197 listings starting at $5,999
Used Nissan Sentra
62 Great Deals out of 1,962 listings starting at $1,800
Used Honda Civic
182 Great Deals out of 4,014 listings starting at $2,877
Used Nissan Rogue
131 Great Deals out of 5,063 listings starting at $2,320
Used Toyota Corolla
154 Great Deals out of 2,252 listings starting at $3,495
Used Dodge Charger
50 Great Deals out of 849 listings starting at $5,995
Used Chevrolet Malibu
53 Great Deals out of 1,044 listings starting at $2,995
Used Hyundai Sonata
51 Great Deals out of 850 listings starting at $1,543
Used Hyundai Elantra
167 Great Deals out of 3,080 listings starting at $1,995
Used Nissan Altima Coupe
3 Great Deals out of 15 listings starting at $2,995
Used Kia Optima
6 Great Deals out of 233 listings starting at $4,995
Used Ford Fusion
14 Great Deals out of 414 listings starting at $1,451
Used Chevrolet Camaro
17 Great Deals out of 470 listings starting at $11,999

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. Content will be removed if CarGurus becomes aware that it violates our policies.