po421 - Mazda3Club.com : The Original Mazda3 Forum - Threads Tagged with po421

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Threads Tagged with po421

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01, 1, 2005, bank, cat, catalyst, check, code, efficiency, engine, mazda, muffler, po421, pre, protege, removing, threshold

Check Engine (PO421) trouble.

mp5wgn on August-30th-2005

October-2nd-2016 05:10 PM
by ldstia@yahoo.com

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12

44,559

3rd gen Engine/Drivetrain

04mazda3, 09, 2002, auto, check, code, codes, emmisions, engine, innova, light, losing, mazda, p0421, po421, power, protege, zone

Engine code PO421

minihaha on February-19th-2006

March-4th-2006 10:04 AM
by mgs_freak

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4

14,367

3rd Gen Protege/MazdaSpeed/P5/MP3

2000, 2003, car, check, code, engine, es, explain, fix, fixed, light, mazda, p0421, po421, precat, protege, resolved

trouble code P0421

mrjiggy on March-17th-2003

March-18th-2003 09:33 AM
by protetype

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4

8,185

3rd Gen Protege/MazdaSpeed/P5/MP3

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