P0420

[DJScram]

Good day everyone I have a 2020 Sahara and I was driving yesterday and check engine light came on and checked it and it came up with the p0420. Anyone have this code

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[Comptonmike]

O2 sensor typically.

 

[DJScram]

Ok thank you

 

[Comptonmike]

They replaced my engine under warranty and afterwards, the same code popped up while they were test driving. They replaced the whole exhaust system, cats and 02 sensors under warranty. Probably another Jeep issue they don't want us to know about.

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