Threads Tagged with p0420

2000, california, camaro, catalytic, code, converter, converters, criteria, law, ls1tech, magnaflow, matter, p0420, p0430, recalls, transam

California Catalytic Converter !?

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1 2)

draklon13 on 06-13-2009

11-11-2009 08:17 PM
by ke6eum

29

15,196

cat, code, dtc, gm, p0141, p01415, p0420, ws6

Got new cat and now a new code...need help!!

raljr9 on 10-13-2009

10-14-2009 07:19 PM
by 98pontiac

6

739

anti, code, downpipe, dp7s, foulers, gain, grand, gxp, hogan, hp, magnaflow, p0420, performance, plug, prix, silverado, spark

hogan DP

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1 2 3)

johnrogeri12 on 04-05-2009

09-16-2009 10:25 PM
by Rossko85

51

4,392

LS4 Performance

03, cat, cataclean, cats, chevron, cleaner, fuel, injector, l200, ls1tech, p0420, po420, replacement, saturn, shocking, techron

DTC P0420 -Shocking the cat?

koolaid_kid on 09-13-2009

09-13-2009 12:47 PM
by koolaid_kid

4

3,988

02, 2000, 2002, 38, autotap, cadillac, camaro, code, ls1, ls1tech, p0420, po420, pontiac, simms, tech

Code P0420 Keeps coming up...what is this?

2000 ws6 on 01-28-2002

09-04-2009 05:56 PM
by vasile2

16

17,887

Generation III Internal Engine

P0420 again!

PREB_2K2FORMULA on 07-31-2009

08-03-2009 01:53 PM
by PREB_2K2FORMULA

2

540

altima, caddy, cadillac, cai, check, code, cts, ctsv, engine, gm, gto, hemi, light, p0420, sensor

P0420 Code help!

amfmlittle on 07-25-2009

07-27-2009 09:22 AM
by 1actsv

9

7,453

Cadillac CTS-V 2004-2007 (Gen I)

1, 2001, 2002, 88, catalyst, efficiency, firebird, ls, olds, p0420, po420, pontiac, system, thresholdbank, v6, z28

P0420 code need help

Steve8S on 07-08-2009

07-09-2009 09:04 AM
by dancrosoft

8

8,845

1133, 2005, 22, code, ecotec, engine, exhaust, fix, grand, gtp, leak, p0420, p1133, p1134, pontiac, prix, silverado

any mechanics in the house?? please can you help me out??

bdyman on 06-10-2009

06-15-2009 06:52 PM
by 00ssmg

19

1,140

Midwestern Members

P0200 and P0332 and others.

Justin Gibbons on 06-04-2009

06-05-2009 12:50 PM
by Justin Gibbons

1

698

Generation III External Engine

catalytic, converter, extended, p0420, warranty

F*cking Cat is dying! Have a couple questions...

Nightrydass on 04-24-2009

04-25-2009 08:45 PM
by massls1guy

13

977

body, car, cat, effic, exhaust, faster, makes, p0420, threshold, throttle, upgrade

Throttle body or exhaust? HELP!

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1 2)

camarolover209 on 03-21-2009

04-02-2009 04:41 PM
by FirebirdWS86

21

1,267

1998, 2000, 2001, bank, camaro, catalytic, code, defective, firebird, ls1, p0420, po420, pontiac, trans, transam

Code p0420

Ice78Transam on 03-30-2009

03-31-2009 12:51 AM
by Zerokube

5

1,171

got my SES codes. need help.

yungepjr on 01-09-2009

01-09-2009 07:54 PM
by ROCNDAV

3

598

Western Members

code, codes, delete, deleting, diablo, diablosport, diagnostic, erase, p0420, pcm, predator, sport, tune, tuner, ways

how do you delete p0420 code with diablosport?

srtricky on 12-20-2008

12-20-2008 10:39 PM
by srtricky

2

1,891

1997, camaro, catalytic, converter, direct, fit, ls1, ls1tech, lt1, magnaflow, obd2, p0420, p0430, po420, scanner, ses, spun

SES Light - cat needs to be replaced?

Lime on 09-18-2008

10-02-2008 04:34 PM
by Formula413

14

1,136

Repeated instances of P0420

jedimaster71472 on 09-13-2008

09-21-2008 09:40 AM
by jedimaster71472

3

891

Service Engine Soon(P0430/P0420)

99Ws6302 on 09-16-2008

09-16-2008 11:56 PM
by 99Ws6302

1

574

01, 2005, 2006, 57, camaro, cat, code, fix, grand, gxp, p0420, prix, seafoam, seaform, silverado, unclog

P0420 Stayed Gone Once Cleard. Is It Ok Now?

Bad06SS on 08-18-2008

08-18-2008 09:58 PM
by S8ER95Z

5

1,368

General LSX Automobile Discussion

2002, 420, 430, actron, code, cp9145, gm, heater, ho2s, lincoln, ls1tech, p0420, performance, replacing, zr2

code 420: cats, questions and options?

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1 2)

BrianMSmith on 02-22-2008

07-09-2008 08:54 PM
by Mean87SS

20

5,729

1, 2000, 2001, 2004, 43, bank, banks, catalyst, efficiency, impala, nissian, p0420, silverado, system, threshold

Catalyst System Efficiency Below Threshold

ZeroFear on 04-14-2008

06-20-2008 05:47 PM
by Black01M6SS

17

5,428

2000, 38, 38l, catalytic, code, conditions, converter, damage, firbird, firebird, intermittent, p0420, physical, po420, ses, setting

Ses P0420

zanethan on 06-07-2008

06-08-2008 03:24 AM
by atxz/28maro

1

1,019

1997, 1999, car, code, eclipse, firebird, lt1, modified, p0420, p0441, po420, po441, pontiac, stand, z28

P0420, P0441, P0420

Cheap Guy on 06-07-2008

06-07-2008 12:18 PM
by Cheap Guy

0

1,590

Noob Exhaust Question

Ruedy4 on 05-28-2008

05-30-2008 07:50 PM
by SOMbitch

11

675

2000, camaro, catalytic, check, converter, emissions, engine, extended, light, ls1, p0420, service, test, v8, warranty

Check Engine Light-what's this code mean?

wyattmutigerlaw on 05-06-2008

05-07-2008 06:58 PM
by Black01M6SS

12

1,705

97, code, corvette, deleted, efilive, emissions, light, p0140, p0420, p0430, pass, pcm, po420, shut, tune, turns, ws6

P0420.. But I deleted my 02' soncers.. Mistake?

01ls1lover on 04-12-2008

04-21-2008 04:48 PM
by 01ls1lover

14

1,457

1997, 97, camaro, continental, coolant, engine, light, lincoln, low, p0420, service, z28

Pulled 4 codes tonight

mcalus on 04-16-2008

04-18-2008 02:23 PM
by venom889

7

1,135

P0420 Code ?

RobZ on 04-07-2008

04-07-2008 03:21 PM
by edcmat-l1

2

662

General LSX Automobile Discussion

2002, 30, 95, cel, code, p0420, rid, saab, turbo, v6

Hello and some help

saabtols1 on 04-02-2008

04-02-2008 08:59 AM
by saabtols1

4

425

2000, 2002, 2003, 2004, 2005, 2007, 420, 60, bank, code, escalade, impala, p0420, po, po420

Code p0420

WS SIKZ on 03-25-2007

01-08-2008 12:48 PM
by 7901 WS6

12

2,877

0430, 2001, 99, bank, camaro, catalyst, chevy, code, dtc, efficiency, gm, gmc, hemi, p0420, p0430

p0420 and p0430 even after brand new gm cats

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1 2)

promod1955 on 08-23-2007

11-09-2007 04:18 PM
by Cruz28

35

50,886

1996, 2006, carlo, chevrolet, chevy, code, downpipe, hogan, impala, monte, p0400, p0420, p0430, po420, ss

Hogan down pipe

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1 2 3)

Mels SS on 10-14-2007

11-01-2007 11:55 AM
by deft

43

4,281

LS4 Performance

capacitor, code, laws, minnesota, odb2, p0420, p0430, sensor, smog, trick

D*mn Cali smog law

rocketz28 on 08-23-2007

08-24-2007 01:37 AM
by z28fury

2

729

1, bank, car, catalyst, code, effeciency, efficiency, firebird, gmc, low, p0420, pending, pontiac, stalls, system

Catalyst system low efficiency bank 1

supersickss on 08-06-2007

08-07-2007 01:20 PM
by 2001NBMZ28

4

1,203

bank, catalyst, code, jeep, jetta, liberty, lt1, p0125, p0171, p0172, p0400, p0420, p1573, system, threshold, vw

anyone had these codes?

1slot/a408 on 08-01-2007

08-01-2007 10:32 PM
by dhdenney

7

819

Bad cat

Dozier13 on 06-28-2007

07-02-2007 04:12 PM
by Dozier13

4

644

Generation III External Engine

02, 2002, chevrolet, code, codes, engine, fix, gm, malibu, p0420, po1153, po152, po300, po430, problem, suburban

Both 02 Sensors Bad...

CaMaRo67RS355 on 03-13-2007

05-30-2007 06:11 PM
by 98silverz28

17

2,836

needin help bad

sscamaro96 on 04-30-2007

04-30-2007 08:45 PM
by SincalT/A

2

757

code p0420

2000 Tran Zam on 03-26-2007

03-26-2007 09:00 PM
by monsterbreather

2

479

0420, 97, bank, camaro, catalyst, efficiency, firebird, ls1tech, lt1, lt4, out, p0420, rule, side, threshold

P0420 Catalyst Below Efficiency... But which?

MusPuppis on 03-13-2007

03-13-2007 04:53 PM
by Formula413

1

1,461

2004, code, codes, diagnose, g8, gt, gto, o2, p0420, rear, sensor

Diagnosing rear O2's

Steel Chicken on 11-28-2006

02-16-2007 09:13 AM
by b4c2002camaro

11

584

01, 05, 1004, carlo, cat, flow, ho2s, impala, light, monte, mv, p0420, reading, ses, set, silverado, ss

i need some help please

joeilesGXP on 01-06-2007

01-10-2007 09:46 PM
by joeilesGXP

9

1,009

LS4 Performance

57, body, bulletin, camaro, catalytic, converter, impala, letter, ls1, p0420, p0430, recall, service, ss, tsb05513, x3

service bulletin letter in the mail

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1 2)

R1LS1 on 12-08-2006

01-06-2007 09:35 AM
by AutomagicLS1

24

2,310

Chevrolet Camaro 1967-2002

1153, 2001, 2002, 98, camaro, cats, chevrolet, chevy, code, codep0420, manufactured, p0420, p1153, ss

Code P0420, and P1153 please help.

mgmz28 on 12-28-2006

12-28-2006 04:07 PM
by mgmz28

3

1,558

1998, 2001, 99, camaro, chevy, codes, dtc, firebird, formula, gm, legacy, p0420, p0430, subaru, z28

SES Light - P0420 and P0430..NEED HELP!!

ModGod on 08-29-2006

09-01-2006 10:02 PM
by ModGod

14

2,163

Generation III External Engine

2004, 2006, bad, cat, code, diagnostic, gto, ls1tech, p0420, po420, s60, tree, ws6

P0420 Just threw that code, bad cat?

CapoWS6 on 08-07-2006

08-18-2006 07:49 PM
by SSblack98

14

1,750

code, ls1, p0300, p0420, p0420pd, pd, tahoe

After plugs and wires ...............

Fire Inside on 08-14-2006

08-15-2006 01:20 AM
by Fire Inside

2

649

442, code, codes, diagnostic, dtc, egr, fix, frustrated, ls1, p0401, p0420, p0530, p1441, pcm, tree

Help Please...12 DTC CODES!!!

DarkAzNite on 08-08-2006

08-08-2006 11:11 PM
by DarkAzNite

6

1,106