Code po420

2012 CHEVROLET MALIBU
120,000 MILES
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ABELRAYA
  • MEMBER
  • 1 POST
I have a live data freeze when code occurred.
Aug 15, 2019 at 5:51 PM
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.
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SCGRANTURISMO
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 4,897 POSTS
Hello,

This Direct Trouble Code (DTC) is set when, through normal wear and tear, your vehicle's catalytic converter has exceeded it's useful life expectancy. Basically, your catalytic converter is used up and you need a new one. In the diagrams down below I have included a factory diagnostic troubleshooting guide for your vehicle for DTC P0420. Please go through it and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
Aug 15, 2019 at 6:09 PM
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