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

215

Asked by 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

3 Answers

198,075

P1133 bank one sensor one and a P420 are still after you cleared the codes and ran a relearn protocol would tell me that there is a failure in the catalyst on bank one. You must clear the codes after the repair and not run another unless the check light turns on or the relearn protocols have been accomplished. Did you so that?

2 people found this helpful.
198,075

Blasted spell check. Did you do that?

1 people found this helpful.
10

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.

1 people found this helpful.

Your Answer:

ES 300

Looking for a Used ES 300 in your area?

CarGurus has 443 nationwide ES 300 listings starting at $599.

ZIP:

Lexus ES 300 Experts

  • #1
    AndyESLexus
    Reputation
    3,140
  • #2
    Guru5H8HM
    Reputation
    2,900
  • #3
    GuruBPJQ
    Reputation
    2,410
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used Lexus GS 300
9 Great Deals out of 335 listings starting at $2,990
Used Toyota Camry
1,475 Great Deals out of 75,050 listings starting at $1,062
Used Honda Accord
1,176 Great Deals out of 69,792 listings starting at $1,200
Used Toyota Avalon
180 Great Deals out of 7,948 listings starting at $2,350

Used Cars For Sale

2003 Lexus ES 300 FWD For Sale
4 Great Deals out of 131 listings starting at $599

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.