Mechanics

IS IT POSSIBLE FOR A CATALYTIC CONVERTER TO GO "BAD" FOUR DAYS AFTER PASSING A STATE EMISSIONS TEST?

2004 Infiniti G35 • 147,000 miles

I recently passed state emissions testing. Exactly four days later, my SES light came on revealing code: P0430 Catalyst System Efficiency below threshold Bank 2. Now I am told I need a new catalytic converter. How is this possible? Do catalytic converters just go bad one day? How can it pass one day and be dead the next?
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Adwizard
February 11, 2012.




Possibly the catalytic converter, exhaust leak and oxygen sensor problem

Rasmataz
Feb 11, 2012.


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