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06/12/2023 1:41 pm
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Dear Scotty,
I have a 2011 Jeep Wranglers, when driving in the city, I get error code P0420, but after awhile driving on the freeway it goes away. Replace the cat or live with it?
2 Answers
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06/12/2023 5:10 pm
check the o2 sensors. Details in the FAQ
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06/12/2023 2:23 pm
Dear Scotty,
I have a 2011 Jeep Wranglers, when driving in the city, I get error code P0420, but after awhile driving on the freeway it goes away. Replace the cat or live with it?
Catalytic converters are designed for the lifetime of the Jeep. Something with the engine is throwing things off. It could be anything from a simple vacuum leak, to oxygen sensors to exhaust manifold leaks. You need to interpret this with Live Data.
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