Jump to content
CaddyInfo Cadillac Forum

DTC P0420 Catalyst System Low Efficiency


Recommended Posts

Anybody been able to fix the problem this code is reporting.

Do I replace the O2 sensor after the cat?

Link to comment
Share on other sites


Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...