Q: Bought it yesterday. Check engine light is on

asked by on May 20, 2016

So i bought this vehicle yesterday, as is no warranty. Check engine light has just popped on, went to autozone and their reader said the catalytic converter is getting clogged. I read that a faulty spark plugs can be the problem, and the dealer told me they had just replaced them a couple days before hand. Is this most likely the problem?

My car has 107000 miles.
My car has an automatic transmission.

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