p0420

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1, 2007, 420, bank, catalyst, code, codelexus, efficiency, engine, is300, jumps, lexus, light, p0420, po420, radiator, rx350, system, threshold, video

PO420 code HELP!

camera on Jun 11, 2012

Jun 12, 2012 03:43 PM
by GS4_Fiend

2

5,482

ES - 1st to 6th Gen (1990-2018)

1996, 300, 420, 97, code, corolla, es, exhaust, gasket, lexus, ls400, lx450, p0420, po420, rx, rx300

P0420 code, cat problem....no!

boxbrownie on Apr 2, 2012

Apr 5, 2012 12:27 AM
by boxbrownie

2

4,052

RX - 1st Gen (1999-2003)

2005, cat, catalyst, catalytic, code, codes, efficiency, error, es330, lexus, ls460, oxygen, p0420, p420, position, post, sensor, system

Fixed P0420 code "Catalyst System Efficiency..." error without replacing Cats

airmaui on Apr 4, 2012

Apr 4, 2012 11:28 PM
by GS4_Fiend

1

12,709

SC430 - 2nd Gen (2001-2010)

acc on Jan 4, 2012

Mar 12, 2012 09:21 PM
by vermont

3

2,023

ES - 1st to 6th Gen (1990-2018)

0420, 1999, 1999es300, 2000, 300, 99, code, codes, es, es300, lexus, location, ls460, oxygen, p0420, sensor

1999 ES300 code P0420 HELP!

bunk012 on Mar 3, 2012

Mar 3, 2012 05:33 PM
by bunk012

3

6,527

ES - 1st to 6th Gen (1990-2018)

P0420

hypervish on Oct 24, 2010

Feb 4, 2012 05:29 AM
by hypervish

9

13,051

RX - 1st Gen (1999-2003)

330, bank, cataclean, code, engine, eq, harm, lexus, oil, p0420, p420, ratio, rx, rx330, snake

Have you heard about CataClean?

Emilaman on Nov 7, 2011

Jan 13, 2012 02:49 PM
by Emilaman

13

20,693

Maintenance

2004, 99, camry, catalyst, corolla, drive, efficiency, lexus, obd, p0420, rx300, shifting, threshold, toyota, x2

overdrive

orlonda on Oct 24, 2011

Dec 23, 2011 07:38 AM
by vietalogy

12

1,645

RX - 1st Gen (1999-2003)

02, 30, 99, bank, bank1, change, es, es300, is300, lexus, ls400, p0420, replacing, sensor

Change Bank 1, 02 sensor on 99 ES with pics

Amadauss on Nov 12, 2011

Nov 27, 2011 07:54 PM
by jankiwi

1

1,452

ES - 1st to 6th Gen (1990-2018)

2001, 400, 98, cycle, drive, es300, lexus, ls, module, p0420, p0430, p420, project, shes, videos

Catalyst DTCs P420/P430 w/ VSC issues too

(

1 2)

zippinbye on Nov 1, 2011

Nov 11, 2011 08:00 AM
by zippinbye

18

7,953

GX - 1st Gen (2003-2009)

2006, cel, code, codigo, is250, lexus, ls430, p0303, p0420, toyota

CEL - P0303 and P0420

sop on Nov 2, 2011

Nov 2, 2011 04:33 PM
by Denver

1

1,309

IS - 2nd Gen (2006-2013)

300, 99, bank, check, converter, engine, es, es300, is300, lexus, location, p0420, p420, po420, sensor

'99 ES300 P0420 Bank 1

(

1 2 3)

oldanteek on May 7, 2009

Sep 24, 2011 10:29 AM
by JAYGS4NYC

34

40,365

ES - 1st to 6th Gen (1990-2018)

cel, emissions, gs300, leaks, lexus, light, long, p0420, p0430, pcv, pipe, readiness, standard, throw, toyota, valve

Lexus dealership says

ccorogers on Aug 27, 2011

Aug 28, 2011 04:28 PM
by PureDrifter

12

2,036

LS - 1st and 2nd Gen (1990-2000)

arm, check, control, diagnostic, engine, engineering, fee, lexus, lexusgs430, light, p0420, quality, upper, windows, wont

Lexus Quality/Reliability Overhyped

(

1 2 3 4 5)

milellie11 on Jun 23, 2011

Jun 23, 2011 07:14 PM
by DaveGS4

62

6,183

GS - 2nd Gen (1998-2005)

1995, 2006, 400, catalyst, code, efficiency, is250, lexus, ls, ls400, lx470, p0420, p420, po420, system

Code p0420 96 ls400

Abdiel on May 9, 2011

Jun 10, 2011 10:09 AM
by Abdiel

6

15,003

LS - 1st and 2nd Gen (1990-2000)

1998, 2011, 300, cal, check, code, codes, engine, es, leads, lexus, light, ls400, northern, p0420, po420

Check engine light code p0420

lexluva on Feb 5, 2011

Mar 27, 2011 01:32 AM
by lexluva

10

32,282

ES - 1st to 6th Gen (1990-2018)

90, defouler, defoulers, degree, fix, fouler, header, install, is300, lexus, o2, obx, p0420, plug, sensor, spark

Question on O2 foulers

(

1 2)

GSRSRT on Jan 24, 2010

Mar 3, 2011 11:50 AM
by Infamous 1

17

16,583

GS - 2nd Gen (1998-2005)

470, 98, code, codes, due, error, es300, gas, gs300, gs400, gx, lexus, lower, octane, p0420, p0430

CEL codes P0420 and P0430

(

1 2)

13loody on Jan 1, 2011

Feb 15, 2011 12:45 PM
by milellie11

16

24,357

Performance

2000, 300, eliminate, es, es300, lexus, p0420, po420, resistor, sicnifica

00 es p0420

BMWZ3 on Dec 18, 2010

Feb 11, 2011 11:58 AM
by angmedic91

8

1,897

ES - 1st to 6th Gen (1990-2018)

1999, 2000, 300, code, codes, crown, es, es300, expedition, ford, lexus, p0420, p0446, po446, rx300, victoria

misfires FIXED now have p0446 and p0420 HELP

4u2kno on Nov 24, 2010

Nov 25, 2010 10:06 PM
by Rollin'ES3

4

4,250

ES - 1st to 6th Gen (1990-2018)

04, 2005, 330, code, exhaust, gx470, leak, lexus, obd, p0420, pending, po420, problem, rx330, tachometer

P0420 and P0420 (P)

IamLexus on Nov 15, 2010

Nov 19, 2010 12:08 PM
by IamLexus

5

6,937

ES - 1st to 6th Gen (1990-2018)

01, 1999, 2004, 330, actron, auto, code, cose, cp9850, lexus, p0420, rx, rx300, scanner, solara, toyota

)2 sensor parameters for a P0420 code

Tomek350z on Aug 10, 2010

Aug 11, 2010 05:46 PM
by Lexmex

4

1,973

RX - 1st Gen (1999-2003)

1992, 2000, 300, catalytic, clublexus, code, converter, es300, instaling, install, installation, lexus, p0420, sc, trouble

Installing a Catalytic Converter?

BMWZ3 on Feb 18, 2010

Aug 11, 2010 05:04 PM
by Tomek350z

4

1,676

ES - 1st to 6th Gen (1990-2018)

1999, 400, 99, code, codes, es300, gx470, lexus, ls, ls400, ls430, p0420, po420, rx300, trouble

P0420 trouble code

argee on Jul 25, 2010

Jul 25, 2010 07:12 AM
by Lexmex

1

5,766

ES - 1st to 6th Gen (1990-2018)

2002, 420, aftermarket, camry, cat, code, converter, gs, headers, is300, lexus, light, p0420, po, toyota, vsc

Code P0420 (cat converter) need suggestions

JDMCelsior on Feb 19, 2010

Jul 8, 2010 11:50 AM
by Rich23

10

2,666

GS - 2nd Gen (1998-2005)

1999, 300, 470, code, diagnotics, donut, error, es300, gasket, gx, lexus, p0420, po420, rx, sensor

Po420 error code

JOHNBRAY11 on Apr 30, 2010

May 1, 2010 10:23 AM
by Nad1370

6

15,964

RX - 1st Gen (1999-2003)

1999, 2000, back, code, es300, gs, is300, lexus, long, p0171, p0171p0420, p0420, po171, po420, rx300

Cel p0171 and p0420

JOHNBRAY11 on Oct 16, 2009

Oct 28, 2009 05:16 PM
by JOHNBRAY11

9

2,443

RX - 1st Gen (1999-2003)

2002, 300, code, codes, es, es300, forum, lexus, p0156, p0302, p0420, rating, reliability

ES300 2002 Sensor Codes Galore

300garcia on Oct 26, 2009

Oct 26, 2009 04:51 AM
by 300garcia

0

919

ES - 1st to 6th Gen (1990-2018)

1999, code, es300, lexus, p0171, p042, p0420, po171, po420, rx300

Cel p0171,p042

JOHNBRAY11 on Oct 15, 2009

Oct 15, 2009 06:39 PM
by JOHNBRAY11

2

958

RX - 1st Gen (1999-2003)

1mzfe, 2000, 2004, 300, 87, code, control, engine, es300, lexus, light, meaning, p0420, rx330, trac

Engine and TRAC light on, but...

ganlake on Sep 3, 2009

Sep 5, 2009 01:34 PM
by tromly

5

1,661

ES - 1st to 6th Gen (1990-2018)