p0420 - RX8Club.com - Threads Tagged with p0420

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2000, backfire, bank, catalyst, clears, code, efficiency, engine, giuffre, grand, lawsuit, mazda, p0420, po420, rx8, threshold

P0420 Cataclyst System Efficiency Below Threshold (Bank 1)

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bugster on Aug 7, 2008

Oct 9, 2019 01:29 PM
by Imgunnaownu

44

91,107

Series I Trouble Shooting

Whole slew of problems and some more newbie questions.

MarkX on Jul 22, 2015

Jul 31, 2015 07:50 AM
by Steve Dallas

3

10,722

New Member Forum

P0420 CAT System Below Threshold - Options?

johnrellis on Jun 2, 2015

Jun 3, 2015 03:09 AM
by johnrellis

4

4,977

New Member Forum

CEL, P0420 on RX8 series 1 2005

Iceman808 on Apr 26, 2014

Apr 26, 2014 11:29 PM
by BigCajun

17

13,009

Series I Trouble Shooting

bad, cat, compression, fire, front, idling, low, misfire, p0301, p0420, pam, rebuild, reset, rotor, rx8, rx8club

P0301 after rebuild please help

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1 2)

cbmdj13b on Apr 7, 2012

Sep 27, 2013 02:34 PM
by Fazil Malik

34

9,981

Series I Tech Garage

2004, 30, a4, audi, catalytic, catlytic, chrysler, converter, covers, mazda, p0420, powertrain, rx8, warranty, warraty

Code P0420... covered under powertrain warranty?

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1 2)

Hercules on Jun 5, 2008

May 20, 2013 10:42 AM
by j9fd3s

34

45,454

Series I Tech Garage

2004, beat, cat, cel, code, de, mazda, midpipe, p0420, pipe, racing, rx7, rx8, screw, sound, test

P0420 CEL W/Racing Beat Test Pipe

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1 2)

1990 GT-X on Jan 26, 2013

Jan 28, 2013 09:31 AM
by RIWWP

32

9,396

Series I Tech Garage

carolina, cel, code, inspection, labs, lacquer, north, p0420, pass, quickfix, rid, rx8, rx8club, test, thinner, turboxs, wont

CEL p0420 quick fix please.

Rx8manRich on Jun 7, 2012

Dec 17, 2012 07:42 PM
by splinter

12

17,876

Series I Tech Garage

04, 2005, cap, cel, clear, code, gas, mazda, open, p0420, p0456, po456, rx8, rx8club, shooting, trouble

Cel code p0456?????

bmarrs on Dec 8, 2009

Dec 4, 2012 06:39 PM
by j9fd3s

7

11,281

Series I Tech Garage

bank, bhr, catalyst, check, efficiency, engine, long, mazda, midpipe, p0420, rp, rx8, sitting, supercat, threshold, time

P0420 error; Thinking about replacing CAT

TRIGG3R12 on May 18, 2012

Nov 18, 2012 02:01 PM
by TeamRX8

13

8,143

Series I Aftermarket Performance Modifications

acceleration, audi, brian, cams, crower, low, mark, mazda, missfires, p0302, p0420, possibly, power, rx8, shutter

P0302 Missfire and Power Low (-60BHP) - Help Please

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1 2)

Mr Stu on Oct 10, 2012

Oct 26, 2012 11:31 AM
by Mr Stu

27

5,028

Series I Tech Garage

bad, bolt, broken, cat, catalytic, clogged, code, ess, mazda, p0420, reason, rx8, symptoms

catalytic convertor

671rx8 on Jul 31, 2012

Aug 29, 2012 09:04 PM
by wcs

10

2,948

Series I Trouble Shooting

accelerating, code, exhast, gurgling, leak, leaking, noise, oil, open, p0420, rpm, run, rx8, ss, ssv, stuck, twins

Could this be my SSV??

LBrown8 on Jul 6, 2012

Jul 13, 2012 08:16 AM
by DarkBrew

20

6,778

Series I Trouble Shooting

25, accountlogoutreason, car, cel, code, codes, computer, drove, error, happen, mybb, numbers, p0139, p0420, powered, rx8, skype

Error Codes P0139, 02512, P0420

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1 2)

Alkal1ne on Jul 9, 2012

Jul 11, 2012 04:30 PM
by fyrstormer

25

10,780

Series II Technical and Trouble shooting

100, code, failed, inspection, mazda, miles, nc, p0420, p0420rx8club, rx8, rx8club, wont

P0420 catylist code..

Rx8manRich on Jun 14, 2012

Jun 14, 2012 06:28 PM
by RIWWP

1

2,788

Series I Tech Garage

burning, burnt, car, cat, catalytic, catylic, change, code, coming, conver, converter, converters, installation, p0420, smell

New Catalytic Converter

coach mike on Jul 29, 2010

May 20, 2012 07:04 AM
by nycgps

6

10,860

Series I Tech Garage

420, big, cat, catalytic, code, converter, deal, diagnosis, diagnostic, effen, emissions, federal, p0420, po, rx8, warranty

Diagnostic Fee on P0420

Polish Person on May 3, 2012

May 10, 2012 07:03 PM
by ShellDude

8

2,568

General Automotive

aacatalyst, bank, efficiency, malfunction, mazda, monitor, p0420, rx8

Help with CEL Codes!

iMotoPilot on May 9, 2012

May 9, 2012 03:49 PM
by iMotoPilot

19

1,269

Series I Trouble Shooting

02, 0420, bad, baro, engine, gas, miles, o2, p0420, reading, replacement, reset, response, rx8club, sensor, slow

P0420, o2 sensor, & gas choices o.O

zoomeight on Feb 12, 2012

Feb 14, 2012 07:49 PM
by zoomeight

11

2,921

Series I Trouble Shooting

2000, kn, mazda, miata, p0420, p0420rx8club, yep

Bit by P0420

RadRedR3 on Feb 9, 2012

Feb 10, 2012 08:42 AM
by RadRedR3

6

1,869

RX-8 Discussion

P0420/p0301

kathykat0710 on Jun 19, 2011

Jan 14, 2012 09:09 AM
by Mazurfer

13

8,332

Series I Trouble Shooting

cel, code, p0420, po420, rx8, troubleshooting

Cel p0420

Ndsully on Oct 19, 2011

Oct 19, 2011 01:01 PM
by Ndsully

10

1,971

Series I Trouble Shooting

{ FS }

2004 RX8 GT Package

silkd on Jan 10, 2011

Jul 17, 2011 04:11 AM
by Dark_Horse88

6

2,125

RX-8's For Sale/Wanted

05, california, cel, emission, emissions, mazda, miles, ohio, p0420, premix, premixing, rx8, void, warranty, warrenty

Premix and emissions warranty

myzon26 on Apr 12, 2011

Apr 18, 2011 01:41 PM
by myzon26

13

3,918

RX-8 Discussion

04, cat, club, code, data, delete, mazda, mode, oxygen, p0420, p420, problems, rx, rx8, sensor

P0420 Help

silkd on Mar 10, 2011

Mar 18, 2011 10:41 PM
by stvshaw

6

4,263

Series I Tech Garage

12w6, 2004, catalytic, code, converter, cost, epagovomsconsumerwarr95fstxt, mazda, p0420, pepboys, po420, ports, problems, replacing, rx8, rx8club

P0420 Catalytic Converter?

renaldo on Mar 31, 2009

Feb 25, 2011 02:22 AM
by bumblebeerx8

17

9,943

Series I Trouble Shooting

badge, badges, black, diy, emblem, emblems, flying, make, mazda, p0420, rx8, rx8clum

Flying m badge issues

AJ312 on Feb 13, 2011

Feb 15, 2011 03:24 PM
by AJ312

10

2,037

Series I Exterior Appearance and Body Kits

09, 2004, acadia, cel, code, codes, create, mazda, p0300, p0302, p0420, rx8, trouble, wrx

Cel p0420 p0302

shocktroop on Nov 10, 2010

Nov 10, 2010 03:46 PM
by DarkBrew

1

2,230

Series I Trouble Shooting

, 82, bad, code, gas, overheating, p0420, po420, relay, rx7, rx8, shut, slightly, smell, sulphur, thermostat, wiring

P0420 and overheating

miya on Jun 10, 2009

Sep 13, 2010 03:06 AM
by yiksing

14

11,791

Series I Trouble Shooting

catalyst, catback, check, code, efficiency, engine, exhaust, installing, light, p0240, p0420, po240, rx8, rx8clubnet, system, threshold

Help!..... please check engine light is on p0240

bkkkk93 on Jan 23, 2010

Jan 23, 2010 08:42 PM
by bkkkk93

8

4,004

Series I Trouble Shooting

0355, 04, code, ecu, error, mazda, p0031, p0420, po420, rx8

ECU error Code help needed

Paul Woodsford on Dec 8, 2009

Dec 8, 2009 01:18 PM
by kersh4w

1

1,799

Series I Tech Garage

2004, code, codes, coils, engine, error, fault, infamous, mazda, obd, p0420, p420, po420, rx, rx8

ah! the infamous P0420 code! what now

Xander on Jun 4, 2009

Jun 8, 2009 02:54 PM
by NotAPreppie

5

3,543

Series I Trouble Shooting

1985, 2004, bad, catalytic, check, converter, covered, empty, engine, grand, light, p0420, rx, rx7, rx8, warranty

P0420 and Catalytic converter that empty inside!!!

stask1 on Jan 15, 2009

Mar 19, 2009 01:39 PM
by Ceez76

7

13,388

Series I Trouble Shooting

aftermarket, bank, cat, catalyst, efficiency, evo, exhaust, ftc, nc, p0420, rx8, rx8club, stock, system, threshold

Help with Cat please ! P0420 Catalyst system efficiency below threshold

Sheehan on Feb 18, 2009

Feb 22, 2009 03:12 PM
by Easy_E1

24

9,832

Series I Trouble Shooting

2007, code, fault, gauge, installing, leading, location, mazda, o2, p0420, po420, rx8, sensor, sensors, stock, troubleshooting, wwwp0420com

P0420 Code, odd

L337fpc on Feb 15, 2009

Feb 15, 2009 05:31 PM
by L337fpc

5

8,286

Series I Trouble Shooting

2003, 5500, 6k, cel, civic, fc, hesitates, hesitation, limp, mode, p0420, rx7, rx8, si, surges

Hesitation at 6K plus

Scorpio8 on Nov 11, 2008

Nov 14, 2008 09:55 AM
by Scorpio8

9

1,752

Series I Trouble Shooting

2003, 2007, accessport, accesstuner, catless, cobb, corolla, efficiency, frost, mazdaspeed, nick, p0420, plug, race, requirements, scca, spark, threshold, toyota, tuning, turn

AccessPORT Alpha test started

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huzer21 on Feb 16, 2008

Oct 10, 2008 03:55 PM
by edfred

662

57,764

Series I Engine Tuning Forum

What's up with the weather lately!!!!

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1 2)

ChristInBen on Feb 6, 2008

Feb 6, 2008 10:55 PM
by Footman

25

2,608

Canada Forum

4020, catalytic, check, code, converter, engine, failed, fix, light, mazda, obd, p0420, p420, plug, po420, rx8, spark

Check engine light P0420

u1cracka on Apr 8, 2007

Apr 13, 2007 02:23 PM
by u1cracka

7

6,388

Series I Tech Garage

catalyst, cell, efficiency, p0420, rx, rx8, system, threshold

Any Ideas for a P0420 cell?

rx8guy86 on Dec 5, 2006

Jan 31, 2007 07:00 PM
by rx8guy86

16

2,456

Series I Aftermarket Performance Modifications