Bad catalytic converter

1999 CHRYSLER 300
148,000 MILES • 3.5L • 6 CYL • RWD • AUTOMATIC
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LORAN WADMAN
  • MEMBER
  • 1 POST
Will a bad O2 sensor cause the catalytic Converter to go bad?
Mar 4, 2017 at 1:11 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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STEVE W.
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 15,146 POSTS
It can. If the computer sees the wrong information from the sensor it could cause it to think it was running lean and add fuel to the mix. The extra fuel would cause the converter to run hot and burn out the catalyst.
Mar 4, 2017 at 7:05 PM
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