Threads Tagged with p0421

cataletic, lancer, o2 sensor, p0137, p0421

P0137 and P0421

spyderdog on Sep 23, 2013

Sep 25, 2013 05:10 PM
by spyderdog

8

2,499

Evo Engine / Turbo / Drivetrain

check, code, engine, evo, evolution, lancer, list, mitsubishi, p0421, po421, powered, vbulletin

Check Engine Code P0421 on a catless Evo

TURBO_S2K on Apr 16, 2012

Apr 16, 2012 11:34 PM
by sujinX

3

4,283

01, bank, cat, catalyst, catalytic, check, converter, efficiency, engine, lancer, light, mitsubishi, p0421, po421, threshold, warm, warming, warmup

PO421:Warm Up Catalyst-below threshold (bank #1) CEL

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SLVROZ_03 on Dec 1, 2007

Jan 21, 2012 05:11 PM
by 02modlanceroz

46

69,901

02, 04, 2002, catalyst, code, efficiency, engine, error, es, fix, lancer, mitsubishi, p0421, recall, service, threshold, warm

Lancer es 02 P0421 service engine soon.

AGlancer02 on Sep 30, 2011

Nov 18, 2011 06:38 PM
by Seifer780

13

11,030

moebob on Aug 22, 2011

Sep 6, 2011 08:38 PM
by initialg86

3

1,433

0421, 2002, car, code, codes, drive, es, fix, gas, headers, lancer, mileage, mitsubishi, ode, p0421, po421, transmission

P0421 Need Help ASAP

nawgee on May 10, 2011

Jun 2, 2011 12:46 PM
by Mitsubitshi_Fan

4

2,487

10003122, 100k, 1st, 2002, 2nd, cat, catalytic, code, converter, lancer, mitsubishi, nhtsa, p0421, pre

Catalytic convert help

Ravenlancer on May 17, 2011

May 17, 2011 01:23 PM
by blaze_125

7

1,088

03, 2002, 2003, 421, bank, code, diagnose, diagnostic, drill, inch, lancer, mitsubishi, p0421, po, po421, recalls, whats

Po421 code!!! =[

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barbiebxtch on Mar 8, 2011

Mar 8, 2011 07:12 PM
by mci2727

20

4,580

cats, cel, clear, cod, code, emission, engine, fouler, lancer, light, mitsubishi, p0420, p0421, po420, trick

CEL with OBDII code P0420 or P0421

Hitnrun on Feb 22, 2011

Mar 5, 2011 09:27 PM
by sioux90

1

5,716

2003, california, codes, error, evom, fouler, gas, lancer, p0421, pas, patch, premium, smog, smogging, test

Any CA smog experts here?

ruxen5449 on Feb 16, 2011

Mar 4, 2011 07:33 AM
by ruxen5449

4

1,876

Lancer Engine Management / Tuning Forums

2002, es, lancer, oz, p0134, p0421, tuning

OZ build, tuning questions

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mci2727 on Jul 20, 2010

Jul 28, 2010 06:45 AM
by TouringBubble

15

2,052

03, 2002, catalatic, codes, eclipse, exhaust, locations, magnaflow, mitsubishi, o2, o2 sensor, p0135, p0421, po135, sensor

Continuous P0421 after P0135

MagnumVP on Jun 14, 2010

Jun 14, 2010 10:37 PM
by MagnumVP

4

2,946

32, changing, civic, code, codes, ect, fault, faulty, honda, mitsubishi, o2, p0125, p0421, po125, sensor, trouble

P0125 Trouble Code

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Danieln on Apr 11, 2009

May 20, 2010 06:00 AM
by KaeruNoMe

24

23,387

ECU Flash

02 sensor, catalytic, catalytic convertor, oxygen sensor, p0421

Indepth question regarding cat/02

OZ_racing on Apr 7, 2010

Apr 9, 2010 07:04 PM
by OZ_racing

3

773

2002, catalytic, code, converter, eclipse, fault, fix, lancer, lancere, mitsubishi, p0421, po421, recalls, top, trouble, warmup

Code P0421- Call Mitsu before you do anything!

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Swankzer on Jun 2, 2008

Apr 6, 2010 05:52 PM
by OZ_racing

40

73,541

Lancer How To Requests / Questions / Tips

04, 05, 1500, 2003, catalytic, code, converters, dodge, es, evo, lancer, lancerr, mitsubishi, oz, p0421, po421, ram

p0421 code

jacfumo on Jan 17, 2010

Feb 4, 2010 12:14 AM
by Sn0w Man

6

7,777

02 es - p0421

evo_lancer on Dec 11, 2009

Dec 11, 2009 01:33 PM
by evo_lancer

0

627

Evo Engine / Turbo / Drivetrain

code, ecu, es, fix, lancer, mitsubishi, p0171, p0421, po135, quick, reset

What is This?!

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shannoncorp on Feb 15, 2006

Sep 27, 2009 04:29 AM
by jester81783

114

8,588

P0421

bluelancer20028 on Jul 11, 2009

Sep 24, 2009 09:45 PM
by Ketchup2me

5

1,794

02, 03, 2003, catalyst, check, code, cycle, drive, engine, fault, lancer, light, mitsubishi, p0421, ready, reset

check engine light keeps coming on

notice801 on Mar 28, 2009

May 3, 2009 10:03 PM
by snigguh

3

1,861

04, 2000, 98, code, codes, eclipse, lancer, light, mirage, mitsubishi, p0421, rally, reset, sold, srs, troubleshooting

P0181 & P0421 & Dim Dash Lights!

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1 2)

thedeatons on Jan 14, 2009

Jan 29, 2009 11:41 AM
by mcgarvey

19

6,169

0421, 07, 99, cel, code, diagnostic, engine, galant, gallant, lancer, p0421, recall

CEL code P0421

Lucas03ES on Aug 23, 2008

Aug 25, 2008 08:11 PM
by Lucas03ES

1

993

04, 98, bank1, cel, es, evo, fix, lancer, location, mirage, mitsubishi, o2, p0421, pipe, po421code, problem, sensor, test

O2 sensor question

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Swankzer on May 13, 2008

Jul 11, 2008 04:57 PM
by Juan Martinez

15

1,999

For Sale - Engine / Drivetrain / Power

02, 08, 20, 2003, cast, exhaust, hose, lancer, manifold, oz, p0421, power, pressure, steering, stock

WTB Stock lancer exhaust manifold

camaro379ss on Mar 6, 2008

Mar 16, 2008 08:54 PM
by RedOz03

8

900

2002, bank, catalyst, eclipse, efficiency, elim, lancer, mitsubishi, mustang, o2, p0421, p421, sensor, threshold, tsb, warm

Got a CEL P421

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crypto on Jul 29, 2006

Jan 23, 2008 12:33 PM
by JDM_FeTiSh

51

5,416

2002, 2004, catalytic, code, converter, evolution, fouler, lancer, mitsubishi, nonfouler, p0171, p0301, p0421, plug, recalls, spark

P0421 and P0301 codes after 100 miles...

sykou on Oct 23, 2007

Oct 24, 2007 07:47 AM
by atilla

2

2,738

a question for you exhaust nuts...

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22stars on Jul 18, 2007

Jul 28, 2007 06:50 PM
by LancerAdam

36

1,953

2003, 2004, 30, bleeders, civic, explorer, flush, ford, fuel, honda, injection, lancer, mile, oz, p0421, rally, spped, thousand, tune

So Much To Fix........!!!!!

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escodotcarter on May 30, 2007

Jun 16, 2007 06:25 AM
by Blacksheepdj

17

1,779

p0421

mauisurf2003 on Jun 9, 2007

Jun 9, 2007 06:27 PM
by atilla

1

995