P0420 code
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1st Gear
Joined: Jun 2025
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P0420 code
I was wondering what all I should be looking at to help diagnose how screwed I might be after this code popped up. I need to do an oil change and wouldn't hurt to swap out the engine air filter too, so was wondering if those may fix the issue. Haven't cleared the code to see if it will pop back up again or not as I just checked the code half an hour ago.
2019 F150 2.7L 6cyl ecoboost
2019 F150 2.7L 6cyl ecoboost
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