How Do I Fix Code P0421

16 Jul 2024
posts
Miss Frieda Flatley DDS

Code p0421?: thank you so much for replying to my question, your Check engine light on with code p0421, how do i fix it? P0421 code

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P0421 — warm up catalyst efficiency below threshold (bank 1) – eeuroparts

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Check Engine Light on with Code P0421, How Do I Fix It?

P0421 — warm up catalyst efficiency below threshold (bank 1) – eeuroparts

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