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Threads Tagged with p0421

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2000, engine, fuel, hesitation, long, low, mazda, mpv, p0421, po421, rpm, spec, system, term, trim

P0421 and Hesitation at low RPMs

TIonLI on Sep 17, 2007

Sep 17, 2007 07:30 PM
by TIonLI

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1

5,366

200, 626, back, cat, code, coming, definition, engine, forum, light, mazda, millenia, mpv, p0421, p0421mazda, pre

P0421

2000grnS on Jun 18, 2007

Sep 7, 2007 07:34 PM
by keninn

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6

3,630

0421, 1, 2000, bank, code, dtc, engine, mazda, miata, mpv, p0421, pending, po421, trouble, van

Engine light code P0421

lmt67c on Aug 13, 2007

Aug 14, 2007 07:16 AM
by bobbyt46

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1

5,693

02, 04, 626, cat, code, complete, ecm, egr, mazda, mpv, p0421, p0431, pictures, replacement, trouble

CEL Trouble code P0431/EGR not complete

Jazzy G on Aug 2, 2007

Aug 2, 2007 03:34 PM
by Jazzy G

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0

3,446

New Member Area

00, 18l, 2000, 2003, cat, code, es, fix, fixed, mazda, p0421, protege, protoge

P0421 code, O2 or Cat...

Soggydog on Jul 27, 2007

Jul 31, 2007 12:31 PM
by Soggydog

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2

6,632

02, 1999, 2007, cel, check, cleared, engine, light, maxda, mazda, miata, milennia, p0421, po421, sensor

P0421 check engine light

ChrisMazda on May 30, 2007

Jun 1, 2007 11:59 PM
by ChrisMazda

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2

8,097

Mazda Miata (MX-5)

1997, 20, 626, 97, car, code, engine, error, falla, lx, mazda, p0421, po421, po421mazda6261997dx

Error P0421 mazda626 Help

mazda390 on May 17, 2007

May 17, 2007 05:52 AM
by mazda390

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2,380

New Member Area

boggs, half, lost, mazda, p0421, past, power, suddenly, throttle

cant go past half throttle

(

Multi-page thread

1 2)

kaylyn on Apr 20, 2007

Apr 25, 2007 01:58 PM
by babyhuey

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10

3,633

0510, 626, battery, closed, code, codes, mazda, millenia, p0421, p0510, p1795, position, sensor, sticking, throttle

Codes P0421,P0510,p1795

2000smazda on Feb 27, 2007

Apr 21, 2007 11:42 AM
by 2000smazda

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6

4,301

01, 2001, codes, mazda, p0421, p0423, pls, repair

2001 milly CEL issues Pls help

DRE2001 on Feb 28, 2007

Mar 1, 2007 05:31 PM
by babyhuey

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3

1,922

01, 2000, bank, california, catalytic, converter, exhaust, firewall, manifold, mazda, millenia, mpv, p0421, po421, side

2000 Mazda MPV throwing po421

ronnyek on Jan 12, 2007

Jan 23, 2007 01:14 PM
by djn

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2

12,422

2000, cat, catalyst, cataylst, check, engine, light, mazada, mazda, millenia, p0421, pre, threshold, warm, warmup, worry

P0421 warm up catalyst

miguelin2182 on Dec 12, 2006

Dec 14, 2006 01:39 AM
by keninn

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3

8,340

1998, 2000, 421, 626, cat, code, emission, fix, ignore, mazda, millenia, obd2, p0421, pass, po, protege, warm

CEL problem OBDII code: P0421

carsearch on Apr 19, 2006

Apr 24, 2006 09:06 PM
by carsearch

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6

9,003

Mazda 323,Mazda 626 & Mazda 929

03, 2000, bank, california, cel, emission, fix, goodwill, mazda, mpv, oxygen, p0421, repair, sensor, warranty

CEL P0421 Help!

jlee on Feb 25, 2006

Mar 1, 2006 11:14 PM
by babyhuey

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2,930

cat, emission, mazda, millenia, p0421, po421, warranties, warranty

cel p0421 warranty?

fordpawn on Dec 16, 2005

Dec 20, 2005 11:13 PM
by babyhuey

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2,634

2000, 2005, 626, check, code, codes, engine, error, maxda, mazda, miata, millenia, mpv, p0421, po421, protege

error code p0421

prostarthunder on Apr 9, 2005

Apr 9, 2005 04:37 PM
by prostarthunder

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7,746

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