Code P0421 Mazda 3

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P0421 – Warm Up Catalytic Converter Bank 1 Efficiency Below Threshold

Mazda6/ford duratec 3.0l P0421 code: warm up catalyst efficiency below threshold (bank 1) Code p0421?: i'm getting that code, but i do know that the...

Got engine code p0421 (catalyst efficiency below threshold bank 1

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Got engine code p0421 (catalyst efficiency below threshold bank 1

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Codigo p0421 mazda 3

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