Threads Tagged with p0420

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

02, 2001, 250, code, codes, es300, ford, gs400, headers, is300, lexus, ls400, oxygen, p0420, p0430, sensor

p0430 code ... which cat is bad?

luckytaxi on Dec 28, 2010

Mar 28, 2014 08:04 AM
by Black1129

9

44,849

IS - 1st Gen (2001-2005)

02, 420, catalyst, code, codes, convertor, error, es300, ii, insufficient, lexus, ls430, obd, p0420, p0430

Puzzled With P0420 and P0430 Codes '97 (solved)

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1 2)

thomas 777 on Dec 26, 2006

Mar 27, 2014 05:15 PM
by striderg3

22

60,213

can i bad TPS cause p0420 code?

islexusred on Jan 15, 2014

Jan 29, 2014 07:50 PM
by hungmc

5

6,059

2001, 430, check, check engine, code, do, engine, fail, gs, gs430, light, oxygen, p0156, p0420, p0430, sensors

Help - GS430 Check Engine Light

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1 2)

vaysburg on Nov 12, 2008

Jan 24, 2014 09:07 PM
by aneidiaz

19

15,220

300, app, codes, evap, evaporative, gs, incomplete, is300, leak, p0420, p0430, pon, small, sys, test, torque

Evaporative sys incomplete! Pic Inside...

islexusred on Dec 26, 2013

Dec 28, 2013 06:35 PM
by Shagnasty

11

5,870

2001, 2344623, 300, 420, cat, code, denso, diagnostic, gs, gs300, lexus, p0420, p420, po, po420, post, rx

Not Again!! Code P0420 :(

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1 2)

milellie11 on Apr 11, 2011

Dec 26, 2013 10:42 AM
by aneidiaz

26

44,324

codes, lexus, p0420, p0430, p0441, p0446

what do all these codes have in common?

EricGX on Dec 2, 2013

Dec 10, 2013 01:55 PM
by RCsGX

5

2,459

GX - 1st Gen (2003-2009)

2006, 2008, bank, catalizador, is250, lexus, loction, p0420

Error P0420 on 2006 Lexus IS250

ReneDK on Sep 27, 2013

Oct 28, 2013 02:53 AM
by ReneDK

3

6,101

1997 ES 300 Codes P0420 and P0410

holdentim on Oct 12, 2013

Oct 12, 2013 02:58 PM
by holdentim

0

1,257

Maintenance

P0420 CEL code for 98 ES300 need ohms.

azcat90 on Oct 4, 2013

Oct 6, 2013 10:01 PM
by PuReChaos

1

1,493

05, 2006, 2007, 250, awd, b2799, code, es300, es330, fix, is250, lexus, p0420, p2799, security

Lexus IS250 need help with code p0420 & B2799?

ysIS250 on Jul 16, 2013

Jul 16, 2013 05:19 PM
by Bichon

2

5,511

1998, 1998 es300, 300, 98, code, es, es300, lexus, p0135, p0401, p0420, p0446, p0450, pitch, thread

1998 es300 p0401, p0402, p0420, p0450, p0446

kayzee1979 on Jun 16, 2013

Jun 16, 2013 03:48 PM
by kayzee1979

0

4,905

330, code, driver, gs300, gurgling, lexus, o2 sensors, p0057, p0420, po420, rx, servomotor, side, sound, vsc lights

Please help a girl out!! P0420 & P0057 code on GS.

lexalex on Nov 12, 2012

Jun 10, 2013 11:25 AM
by Blanco

12

5,514

04, 330, bad, change, code, engine, exhaust, lexus, manifold, p0420, po420, rx, rx330, tire, trac, vsc

04 RX330, new lexus cat giving P0420, vsc, trac off

axzi on Mar 31, 2013

Apr 7, 2013 08:58 PM
by HtownBlue

11

8,288

RX - 2nd Gen (2004-2009)

2000, 2001, avalon, code, es300, gs300, is200, lexus, number, p0420, p1150, p420, part, rx, toyota, trouble

2001 with codes P0420 and P1150

drhill26 on Jan 28, 2013

Mar 13, 2013 05:07 PM
by drhill26

10

4,660

RX - 1st Gen (1999-2003)

1, 6093, bank, cat, catalyst, catalytic, efficiency, es300, es350, is300, lexus, ls400, oem, p0420, system, threshold

P0420 Catalyst system efficiency below threshold bank 1

mre2000 on Jan 27, 2013

Feb 3, 2013 06:21 PM
by LeX2K

9

23,885

New CELs

BearsLexus on Jan 24, 2013

Jan 24, 2013 03:09 PM
by BearsLexus

0

621

RX - 1st Gen (1999-2003)

2006, 250, 470, clear, code, is250, lexus, loacation, lx, o2, oxygen, p0420, p0430, removal, sensor

2006 IS250 with code P0430 and VSC.. Universal O2 sensor worth trying?

ericgray1 on Jan 4, 2013

Jan 5, 2013 10:31 AM
by Gunfighter

3

8,028

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

1999, 2000, 2003, 99, code, codes, fix, gs300, is300, lexus, ls400, p0171, p0420, p0430, troubleshooting

1999 Lexus Code P0430

flyboyplo on Nov 9, 2012

Nov 10, 2012 11:04 AM
by RA40

2

3,608

05, cat, catalyst, code, dtc, efficiency, gx470, is300, lexus, logging, measure, o2, p0420, p0430, sc400, sensors

Catalyst Efficiency; How's It Measured? (Relates to DTC P0420/P0430)

zippinbye on Oct 16, 2012

Oct 21, 2012 06:00 PM
by diagtime

4

2,556

GX - 1st Gen (2003-2009)

450, awd, check, code, engine, is250, lexus, light, lx, p0420, po420, vsc, warranty

Is250 awd getting a p0420 code

Tasty on Dec 11, 2009

Oct 10, 2012 07:00 PM
by Tajai7

1

3,202

06, 08, 2008, buildup, carbon, code, error, is250, is350, lexus, o2, p0420, spacer

P0420 help

edvc520 on Jul 7, 2011

Oct 10, 2012 06:54 PM
by Tajai7

10

3,548

2006, cel, change, code, codes, gs430, is250, is350, lexus, o2, p0420, po420, replacing, sensor, sensors

06 is250 -cel p0420

prpjewel on Feb 24, 2012

Oct 10, 2012 06:48 PM
by Tajai7

6

24,177

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

bank, catalyst, check, code, efficiency, engine, es300, is250, lexus, ls400, p0420, seafoam, system, threshold, treshold

Code P0420 Catalyst System Efficiency Below Threshold (Bank 1) Diagnosis

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1 2)

Lavrishevo on Jan 31, 2012

Aug 24, 2012 10:36 PM
by damon

20

65,851

1999, 300, 99, code, es, es300, forum, gs300, lexus, p0420, p1354, p420, po420, sc400

1999 es 300 p0420

bronco2454 on Aug 16, 2012

Aug 16, 2012 08:12 PM
by bronco2454

0

2,125

0420, 1998, belt, cap, club, error, gas, gs400, is300, lexus, ls400, p0420, rx300, sc300, sc400, serpentine

Fml! P0420 cel

NEbiker10 on Aug 2, 2012

Aug 3, 2012 09:29 AM
by CleanSC

6

2,203

2006, 2007, 250, code, cost, fix, fixed, gs400, is250, lexus, p0420, p420, po420, rid, sc400, yahoo

For ppl that have had the P0420 Code and got it fixed

sepukku on Jul 10, 2011

Jul 14, 2012 04:45 PM
by laobo979

6

11,800

battery, cel, clublexus, code, computer, disconnecting, gx470, lexus, light, p0174, p0420, relean, toyota, trading, yukon

Considering trading.....

evnpar1020 on Jul 12, 2012

Jul 14, 2012 07:54 AM
by EricGreen

8

1,800

GX - 1st Gen (2003-2009)

99, air, air fuel ratio, bad, code, es300, fuel, is300, maf, o2, o2 sensor, p0171, p0420, po171, po420, ratio, sensor

P0171 and P0420 codes -- bad Air/Fuel (o2) sensor or MAF?

m0098es on Jun 19, 2012

Jun 19, 2012 02:04 PM
by m0098es

0

13,823