1998 Chrysler Cirrus Troubleshooting codes

1998 CHRYSLER CIRRUS
169,999 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
KITMS7
  • MEMBER
  • 48 POSTS
I was driving my car yesterday and my check engine light came on. So today I took it to the auto store to get it checked and I received this Troubleshooting Code: P0420. OEM Brand: Domestic Can you explain to me what that code could mean?
Jan 15, 2014 at 8:28 AM
Advertisement
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,413 POSTS
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)

Beginning with '96 models, all cars and trucks sold in the U.S. have additional oxygen sensors after the catalytic converters to monitor them for proper operation. Based on those readings, the Engine Computer determined one of them isn't cleaning up the exhaust gases. Your mechanic will do a few tests first but most likely the catalytic converter will need to be replaced.
Jan 15, 2014 at 8:49 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle