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30/07/2021 6:24 pm
Topic starter
Scotty,
Bought a 2008 Camry with new transmission last week. Car runs good and has 270,000 miles. Yesterday I was driving it and I got a check engine light and got a P0420 error code. I've seen several cheap fixes online but do not want to waste time and money as I am just out of high school. A new catalytic converter might run me about $2,000 and I was hoping you might be able to give advice on how to diagnose this code, I suspect it may be a faulty O2 sensor because of the low gas mileage, 17 combined per gallon when city is said to be about 19.
Thanks,
Josh
1 Answer
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30/07/2021 7:20 pm
Well knowing cameras you either have the bad oxygen sensor or a bad catalytic converter I would advise changing both oxygen sensors first and pray it's not the expensive cat
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