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Threads Tagged with p0421

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

P0421

2000grnS on 06-18-2007

09-07-2007 07:34 PM
by keninn

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6

3,352

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

Engine light code P0421

lmt67c on 08-13-2007

08-14-2007 07:16 AM
by bobbyt46

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1

5,368

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 08-02-2007

08-02-2007 03:34 PM
by Jazzy G

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0

2,872

New Member Area

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

P0421 code, O2 or Cat...

Soggydog on 07-27-2007

07-31-2007 12:31 PM
by Soggydog

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2

5,588

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

P0421 check engine light

ChrisMazda on 05-30-2007

06-01-2007 11:59 PM
by ChrisMazda

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2

7,213

Mazda Miata (MX-5)

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

Error P0421 mazda626 Help

mazda390 on 05-17-2007

05-17-2007 05:52 AM
by mazda390

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2,086

New Member Area

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

cant go past half throttle

(

Multi-page thread

1 2)

kaylyn on 04-20-2007

04-25-2007 01:58 PM
by babyhuey

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10

2,716

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

Codes P0421,P0510,p1795

2000smazda on 02-27-2007

04-21-2007 11:42 AM
by 2000smazda

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6

3,869

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

2001 milly CEL issues Pls help

DRE2001 on 02-28-2007

03-01-2007 05:31 PM
by babyhuey

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3

1,492

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

2000 Mazda MPV throwing po421

ronnyek on 01-12-2007

01-23-2007 01:14 PM
by djn

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2

11,544

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

P0421 warm up catalyst

miguelin2182 on 12-12-2006

12-14-2006 01:39 AM
by keninn

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3

7,028

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

CEL problem OBDII code: P0421

carsearch on 04-19-2006

04-24-2006 09:06 PM
by carsearch

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6

8,363

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 02-25-2006

03-01-2006 11:14 PM
by babyhuey

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1

2,552

1997, 20, 2000, 626, california, code, control, emision, error, mazda, mpv, oxygen, p0421, p0421mazda, sensor

Error code P0421

jroberts 312 on 01-25-2006

02-27-2006 05:23 PM
by jroberts 312

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2

11,824

Mazda 323,Mazda 626 & Mazda 929

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

cel p0421 warranty?

fordpawn on 12-16-2005

12-20-2005 11:13 PM
by babyhuey

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1

2,221

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

error code p0421

prostarthunder on 04-09-2005

04-09-2005 04:37 PM
by prostarthunder

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0

6,917

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