Multiple codes on car?

2011 CHEVROLET EQUINOX
215,887 MILES • 2.4L • AUTOMATIC
Avatar
DAVID CHANDLER FARR
  • MEMBER
  • 41 POSTS
Check engine codes show:

Cat efficiency below threshold
Engine misfire

ABS light. Traction light. Service stability, track light are on.

Please direct me on what these are and how to fix.
Mar 13, 2025 at 8:13 PM
Advertisement
Avatar
STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
From the description I would say you have a couple issues. The engine misfire is likely dumping extra fuel into the exhaust and that is causing the converter code as well. It needs to be repaired before you can test if the converter is actually done or can possibly be saved. The ABS light and others are all related. Very likely either a bad speed wheel speed sensor or bad magnetic ring in the hub. Does your scan tool read live data? If so, use it to determine if the misfire is a single cylinder or a multi-cylinder (P0300) miss. The ABS should also show a code related to a wheel cylinder or ABS module failure. The modules are a known failure item. Run a few scans and see what you find. Then split the two items so you have two questions. This way if others search for the problems, they only get one issue instead of two.
Mar 13, 2025 at 9:26 PM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.