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23/09/2022 7:14 pm
Topic starter
Scotty,
I have a 2011 ford fiesta manual 150k. Just got code P0420 catalyst system below threshold. Is it likely just an O2 sensor or am I out of luck?
3 Answers
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23/09/2022 8:04 pm
Please check in the FAQ
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24/09/2022 1:58 am
Is it likely just an O2 sensor or am I out of luck?
Experience shows that probably it's the cat.
Ford cats installed on their smaller cars are among the worst in the industry.
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