Threads Tagged with p0420

added, audi, code, coolant, engine, evo, evolution, exhaust, fix, free, light, p0420, pipe, sensor, temp, temperature

P0420 Code After Exhaust?

d3r3k on Jun 30, 2010

Feb 17, 2021 09:25 PM
by Lancerzz

12

43,281

09+ Ralliart Engine/Turbo/Drivetrain

2 codes P0725 and P0420-Please reply

Jbone on May 6, 2015

Aug 28, 2016 07:27 PM
by JMoney2812

4

8,386

Lancer Troubleshooting

catalytic, delete, enable, erase, erasing, evo, evo8, fix, monitoring, p0420, patch, po420, remedy, remove, spacer

p0420 delete/fix???!!!!

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1 2)

bulhas on Jul 8, 2010

Mar 15, 2015 10:54 AM
by robyn402

24

8,091

0031, 05, cel, code, corolla, evo, fouler, lancer, p0031, p0420, resistor, shouting, trick, trouble, wrx

P0031 code keeps coming back

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fireroasted on Feb 27, 2009

Aug 21, 2012 05:18 PM
by 211Ratsbud

51

19,631

02, anti, cat, code, codes, disable, evo, evolution, flow, fouler, high, mitsubishi, nod, p0420, stock

P0420 Code??!!

sadevoowner on May 22, 2012

Jun 28, 2012 12:43 AM
by sadevoowner

8

11,619

Evo General

2006, back, buschur, cat, evo, hfc, ix, p0420, pipe, po420, racing, stock, test, testing, ur, vcds

UR Test Pipe P0420 Fix?

ExtremeDSM on Feb 10, 2012

Feb 23, 2012 06:40 AM
by rjsdxm

14

5,446

code, codes, egr, evo, flow, lancer, mitsubishi, obd2, p0402, p0420

p0402 code

Chaz17 on Feb 8, 2012

Feb 13, 2012 12:38 PM
by Chaz17

3

2,748

Lancer Engine Management / Tuning Forums

0420, 05, 2012, 35, cataclean, dealer, delearship, ecureflash, evo, evolution, flash, flashed, maxima, mitsubishi, p0420, reflash, stock

Dealer flash, now P0420?

10EvoX on Feb 2, 2012

Feb 2, 2012 02:00 PM
by Iowa999

5

1,557

Evo X General

2008, 2009, cat, catback, cel, code, es, fix, forum, injen, lancer, mini, o2, p0420, sensor, ses

Cel p0420

nick9g4b1 on Dec 10, 2011

Jan 8, 2012 10:16 AM
by nick9g4b1

10

5,471

0102, cheat, check, code, computer, e85, ecu, evo, evolutionm, fail, mitsubishi, nonstock, p0420, smog, tune

Smog Test P0420 Failed - Advice?

CDrinkH2O on Jul 17, 2011

Oct 9, 2011 11:22 PM
by barneyb

14

4,788

Evo Engine / Turbo / Drivetrain

02, cel, code, evo, evolution, fix, ix, lancer, mitsubishi, o2, p0420, po420, rear, sensor, wrx

P0420 CEL fix rear 02 sensor

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rewindnottm on Jan 23, 2010

Oct 9, 2011 06:02 PM
by NateDaJew

85

37,166

0420, anti, antifoulerp0420how, code, ems, error, evom, fix, fouler, lancer, mitsubishi, p0420, plug, ralliart, spark

Ef you error P0420

TedMitsu on Jul 6, 2011

Jul 11, 2011 11:48 AM
by Mad_SB

13

1,896

EvoOtto on Jun 21, 2011

Jun 28, 2011 11:20 AM
by EvoOtto

6

1,725

2000, altima, anti, code, disable, evo, exhaust, fix, fouler, gti, leak, p0234, p0420, p1235, p420

P1235 p0420 p0234

healthynine on Jun 1, 2011

Jun 2, 2011 09:26 AM
by healthynine

4

2,816

53050012, disable, evo, evom, fix, fixes, p0420, po420, turn

How To Fix P0420

jamie_v1 on Oct 27, 2010

Mar 27, 2011 06:16 PM
by jd888jd

14

3,360

2008, code, disable, disabling, ecuflash, evo, flash, lancer, o2, p0420, p420, simulator, tephra

disabling engine code?

bbak11010 on Mar 24, 2011

Mar 25, 2011 02:56 PM
by bbak11010

6

3,241

Evo Engine / Turbo / Drivetrain

bad, cel, clear, code, evo, nysecel, p0420, running, vw, wont

The CEL the won't go away!!

santeller on Mar 20, 2011

Mar 20, 2011 07:18 PM
by Optiblue

8

1,296

Evo X General

0420, check, code, engine, evo, evox, fuel, li, light, p0420, p1870, po420, pulled, service, solutions

NEED HELP FOR P1870 and P0420

jackfrog on Mar 5, 2011

Mar 7, 2011 06:54 AM
by jackfrog

2

2,042

Evo X General

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

6,180

Lancer Troubleshooting

cheater, dollar, o2, p0420, p1870, slippage, transmission

NEED HELP FOR P1870 and P0420

jackfrog on Mar 5, 2011

Mar 5, 2011 09:00 AM
by jackfrog

4

1,087

02, 2008, ams, code, evo, evo8, evolutionm, fix, lancer, o2, p0420, po420, removal, spacer, spacers, trick, x

Solutions for eliminating P0420 with AMS O2 spacer on?

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1 2)

evoyao on Dec 5, 2009

Dec 5, 2010 06:21 PM
by Bighec

28

9,867

09+ Ralliart Engine/Turbo/Drivetrain

1998, 2009, 53600010, 90, code, degree, diable, disable, evo, mercedes, ml320, o2, p0420, ralliart, spacer

Error Code: P0420

Gibby860 on Nov 24, 2010

Dec 2, 2010 06:15 PM
by Gibby860

10

9,251

04, 2000, 2005, check, chevy, code, engine, evolutionm, lancer, light, p0420, po420, ralliart, s10, vortex

P0420 code

Antonovich on Oct 10, 2010

Oct 26, 2010 07:07 PM
by lanzerralliart

11

3,613

04-06 Ralliart General

apr, cel, clear, code, downpipe, evo, fix, georgia, installed, installing, o2, p0420, pipe, pipes, sensor, test, testpipe, throws, tune

HELP: CEL after installing UR Test pipe and o2/dump??

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dannyz on Aug 4, 2009

Oct 18, 2010 07:20 AM
by fostytou

31

6,621

2004, catalyst, chevy, code, defouler, driving, evo, hfc, ix, p0420, plug, po420, problem, silverado, spark

Driving with P0420 code

modetm on Jul 2, 2010

Jul 3, 2010 08:30 AM
by modetm

13

6,433

Evo General

P0420 with AMS Stage 3 Kit:EVO IX

Shea561 on May 7, 2010

May 7, 2010 01:05 PM
by Shea561

4

994

Evo General

06, 2003, bit, bits, code, deactivate, disable, ecuflash, evo, fca, p0420, p420, periphery

Periphery Bit for P0420 Code

chmodlf on Jun 25, 2009

Apr 7, 2010 06:30 PM
by Dirty25RS

6

3,637

2004, 335i, drive, evo, grand, gtp, long, p0300, p0420, p0420 p0300, po300, po420, prix

Throwing P0420 and p0300 Brand New off lot!

SilverOZrally on Mar 17, 2010

Mar 21, 2010 05:14 PM
by Brokenevo

11

1,446

anti, cat, cel, double, fouler, foulers, make, nonfouler, o2, p0420, plug, remove, sale, sensor, spark

Spark Plug Non Foulers not fixing CEL

TrackDays on Dec 22, 2009

Feb 26, 2010 09:19 PM
by Jan

14

15,233