I get a P420 code along with the P1133 code for 99 Lexus ES300,
465

Asked by Paddy Mar 03, 2016 at 12:08 PM about the 1999 Lexus ES 300 FWD

Question type: Maintenance & Repair

I get a P420 code along with the P1133 code for 99 Lexus ES300, I've changed O2 Sensor under motor towards firewall, and the 02 Sensor on front of engine by radiator.  I used aftermarket sensors, and is that my problem.  Not sure what the P420 means.  Thanks for any help

1 Answer
20

Mac answered 6 years ago

P0420 is a Catalytic converter below efficiency code. Possible bad Cat. I would replace the A/F sensors before and after Cat, clear codes and test drive. If P0420 code returns, Then Your going to be looking at replacing the Catalytic converter.

2 people found this helpful.
Mark helpful

Your Answer:

Related Questions

ES

Looking for a Used ES in your area?

CarGurus has 184 nationwide ES listings starting at $5,900.

Postal Code:

Shortcuts

Search Lexus ES Questions

CarGurus Experts

  • #1
    Guru5H8HM
    Reputation
    4,640
  • #2
    AndyESLexus
    Reputation
    4,570
  • #3
    GuruBPJQ
    Reputation
    3,610
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Toyota Camry
43 Great Deals out of 903 listings starting at $1,888
Used Lexus LS
20 listings starting at $9,500
Used Lexus GS
26 listings starting at $6,999
Used Lexus RX
35 Great Deals out of 884 listings starting at $4,900
Used Honda Accord
53 Great Deals out of 899 listings starting at $3,280
Used Toyota Avalon
24 listings starting at $4,888
Used BMW 5 Series
21 Great Deals out of 298 listings starting at $4,995
Used Mercedes-Benz E-Class
38 Great Deals out of 499 listings starting at $5,495
Used Honda Civic
235 Great Deals out of 3,705 listings starting at $3,495
Used Lexus LX
6 Great Deals out of 39 listings starting at $34,800

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.