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Threads Tagged with po421

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2002, po421, protege5

'02 MP5 automatic code P0421

ncalvinn on 10-16-2020

10-16-2020 05:19 AM
by grim_reaper

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1

882

02, 04, 98, code, mazda, oxygen, p0421, p0421code, pcm, po421, protege, received, replace, sensor, upstream

98 Proteger P0421 code

brown_devil on 10-24-2011

10-26-2011 08:35 PM
by tanprotege

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1

2,929

2001, bank, cadillac, cartalitic, catalytic, code, conerter, converter, coverter, fouler, mazda, mpv, po421, rear, remove, trick

2001 MPV Catalytic Converter

sunycar on 09-15-2011

09-15-2011 05:35 AM
by sunycar

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0

2,583

2003, bypass, catalytic, codes, converter, error, ho2s11, location, mazda, mpv, obd2, obdii, odb, po421, rough, running

2003 MPV Running rough OBD2 Error Codes

Damin69 on 08-16-2011

08-16-2011 11:49 AM
by Damin69

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0

5,455

0100301, bank, bulletin, bulleton, cat, item, mazda, mazda3, millenia, number, p0421, po421, service, technical, tsb

P0421!?!?!?!?!?!

santa6 on 05-24-2011

05-25-2011 01:26 PM
by keninn

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5

4,582

01, 2000, 626, bank, catalytic, codes, converter, mazda, mpv, p0421, plugs, po421, recently, replaced, spark

P0421

brian21740 on 11-05-2010

11-26-2010 04:53 PM
by dasilvarenegade

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1

5,353

Mazda 323,Mazda 626 & Mazda 929

code, miata, po421

O2 sensor (did search)

ntstock93 on 03-01-2010

03-07-2010 10:56 AM
by ntstock93

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3

1,280

2002, 626, code, madza, mazada, mazda, miata, millenia, millina, p0300, p0421, po300, po421, protege, reads

p0300 and p0421

drac2000 on 02-24-2010

03-02-2010 12:29 AM
by cogaivotchong

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1

4,355

code, mazda, miata, mpv, p0421, po421

MPV with P0421 code

NightSwimmer on 03-18-2009

03-18-2009 06:42 PM
by NightSwimmer

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0

3,373

04, 2002, 421, check, code, engine, light, lower, mazda, o2, po, po421, protege, protege5, sensor

New Cat and o2 still get PO421 code

fast951 on 01-07-2009

01-08-2009 03:21 PM
by darkstar4100

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2

3,692

2001, 25l, catalytic, code, codes, converter, mazda, mellenia, miata, millenia, obd2, p0421, part, po421, precat, trouble

trouble code P0421

maddflavor on 05-06-2008

05-22-2008 04:51 PM
by piggylover1985

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5

15,553

00, bank, catalyst, fuel, mazda, mazda6, millenia, mpv, po170, po421, po431, protege, threshold, trim, warm

2000 Millenia S

timysemi on 04-24-2008

04-25-2008 01:39 PM
by keninn

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3

2,129

20, 2001, blinking, cel, code, codes, es, flashing, mazda, misfire, p0300, p0421, po300, po421, protege, random

Flashing CEL - P0300 & P0421 - 2001 2.0 ES

adrockin on 04-09-2008

04-10-2008 08:26 AM
by nelsonjere

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1

4,191

1998, 626, 98, bad, cat, check, code, engine, mazda, o2, p0421, po421, post, pre, protege, symptoms

98 Protege P0421 Check engine light

brown_devil on 01-16-2008

03-01-2008 09:12 PM
by JAXCANE

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3

5,440

bank, mazda, millena, mpv, po421

Cats

Tbird on 01-29-2008

01-31-2008 12:20 AM
by Tbird

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2

1,314

2001, cap, code, codes, diagnosis, diagnostic, gas, madza, mazda, mpv, p0421, p0481, po421, protege, reset

2001 mpv p0421 and p0481 codes

lane stradler on 09-20-2007

09-22-2007 05:39 PM
by hixx

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5

10,474

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

P0421 and Hesitation at low RPMs

TIonLI on 09-17-2007

09-17-2007 07:30 PM
by TIonLI

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1

4,607

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

5,362

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

7,197

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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0

2,084

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