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 5,882 nationwide ES listings starting at $2,295.

ZIP:

Own this car?

Share your experience with others.

1999 Lexus ES

Write a car review

Review another car

Shortcuts

Search Lexus ES Questions

CarGurus Experts

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

Know more, shop wisely

Search

Related Models For Sale

Used Toyota Camry
2,413 Great Deals out of 45,121 listings starting at $900
Used Lexus LS
115 Great Deals out of 1,429 listings starting at $3,000
Used Lexus GS
70 Great Deals out of 937 listings starting at $1,699
Used Lexus RX
1,019 Great Deals out of 12,633 listings starting at $2,250
Used Honda Accord
1,504 Great Deals out of 29,165 listings starting at $1,850
Used Toyota Avalon
176 Great Deals out of 1,966 listings starting at $1,995
Used Mercedes-Benz E-Class
612 Great Deals out of 9,765 listings starting at $1,995
Used Honda Civic
1,417 Great Deals out of 23,287 listings starting at $1,950
Used Toyota Corolla
1,698 Great Deals out of 28,236 listings starting at $2,290
Used BMW 5 Series
671 Great Deals out of 9,014 listings starting at $2,899

Used Cars for Sale

2025 Lexus ES For Sale
4 Great Deals out of 1,131 listings starting at $41,977
2024 Lexus ES For Sale
32 Great Deals out of 382 listings starting at $34,590
2023 Lexus ES For Sale
22 Great Deals out of 254 listings starting at $29,121
2022 Lexus ES For Sale
38 Great Deals out of 618 listings starting at $22,399
2021 Lexus ES For Sale
28 Great Deals out of 319 listings starting at $19,799

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.