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1998 Toyota Corolla OBD-2 code P0420

Tiny
STEVE1675
  • MEMBER
  • 1998 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 135,000 MILES
Catalyst below threshold bank 1 is the only fix for this to replace the converter and if so how do you reset the code after replacement of the converter
Saturday, December 8th, 2007 AT 12:19 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Welcome to 2carpros

Try this pull the EFI fuse for 10secs or bring it to autozone to clear it-free services-or get a scantool.
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Saturday, December 8th, 2007 AT 2:10 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Yep, you will need a scan tool to clear these codes here is a guide to help you do so.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please go over this guide and get back to us.
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Saturday, July 20th, 2024 AT 6:05 PM

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