p0420 - Honda-Tech - Honda Forum Discussion - Threads Tagged with p0420

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cat, civic, code, deficiency, defouler, defoulers, honda, o2, p0420, plug, resistor, spacer, spark, toyota, workaround

p0420 after header

LowTec MOHawk on Feb 7, 2007

Feb 14, 2007 11:03 AM
by skipbarber

8

1,469

Honda Civic (2001 - 2005)

02, 1997, 2002, 96, 97, accord, civic, d3, d4, fix, gas, honda, loop, mileage, open, p0420, poor

Poor gas mileage

(

1 2)

refman102 on Jan 10, 2007

Feb 12, 2007 04:23 AM
by professorman

27

3,136

Honda Accord (1990 - 2002)

001, 1998, 4cyl, 98, accord, civic, closed, code, coupe, defouler, honda, loop, o2, p0420, secondary, subaru

1998 Accord P0420 code ?

jca1972 on Jan 25, 2007

Jan 26, 2007 05:54 PM
by jweller

11

5,765

Honda Accord (1990 - 2002)

2005, cel, dreaded, odyssey, p0420, sputtering, urgent

dreaded p0420 cel code questions,please advise

stoneyb245 on Dec 12, 2006

Dec 12, 2006 07:35 PM
by hondadude

4

799

Honda Accord (1990 - 2002)

2000, 2002, 2003, 97, accord, catalyst, cel, civic, cost, efficiency, honda, p0420, po420, system, threshold

CEL: P0420 "Catalyst System Efficiency Below Threshold"

ieatrice on Nov 14, 2006

Nov 14, 2006 12:04 PM
by Relic1

7

1,899

Honda Civic / Del Sol (1992 - 2000)

00, 1998, 98, cel, civic, code, crv, diagnostic, error, gsr, honda, integra, p0108, p0420, po108, prelude

98 Civic P0108 Engine Death at Stoplights

Willama on Aug 17, 2006

Aug 17, 2006 11:02 AM
by Willama

0

1,741

Honda Civic / Del Sol (1992 - 2000)

99, accord, cat, catalytic, code, converter, honda, inefficientcy, o2, p0420, po420, v6

99 V6 Catalytic converter code P0420. New cat or new 2nd O2?

kchungb17a on Aug 8, 2006

Aug 8, 2006 07:34 PM
by Chiovnidca

6

953

Honda Accord (1990 - 2002)

98, acura, bank, carsound, catalyst, code, engine, fixed, honda, inspection, lean, p0420, pass, running, runs

Fixed Running Lean Code..now P0420 Catalyst code??

98IntegraLSNonVtec on Jul 31, 2006

Jul 31, 2006 11:49 AM
by jared99

6

2,713

Acura Integra

codes, honda, p0420, p1259, p1457, po420, solenoid, vtec

need help on these ecu codes

gmrnguyen on Jul 26, 2006

Jul 26, 2006 03:50 PM
by bg-33p

3

1,094

Acura Integra

2000, b16, civic, em1, honda, p0133, p0420, prelude, sluggish

!!!!CEL P0133 & P0420 Help!!!!

hondamonkey on Jul 6, 2006

Jul 17, 2006 03:34 PM
by hondamonkey

20

6,774

Honda Civic / Del Sol (1992 - 2000)

1st, 2006, accord, code, fixing, fool, honda, o2, obd, p0420, pilot, putting, resistor, sensor, series, solution

Need HELP.... Throwing code P0420

d16rice on Jul 6, 2006

Jul 6, 2006 08:24 PM
by tech8

3

785

Honda Accord (1990 - 2002)

90, 999, accord, carlambodoorscom, degree, door, doors, honda, hondatech, lambo, p0420, plan, reviews, s2000, vertical

Lookin for Bodykits, and 90 degree Vertical Doors

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1 2 3)

HondaSivik on Jun 29, 2006

Jul 6, 2006 11:20 AM
by Aarron_M

51

2,727

Honda S2000

2005, accord, ca, california, catalytic, code, converter, eastern, fishbowlcrew, honda, lx, p0420, p1259, po420, smog, texas, ulev

2000 ACCORD LX I-4 ULEV CEL P0420 - How I passed smog in California

fishbowlcrew on Jun 5, 2006

Jun 5, 2006 11:35 AM
by fishbowlcrew

0

4,265

Honda Accord (1990 - 2002)

98, bank, catalyst, catalytic, check, civic, code, converter, cx, efficiency, engine, hatchback, honda, light, p0420, system, threshold

check engine light on for catalytic converter.....PLEASE HELP!!!

dashskier540 on May 21, 2006

May 21, 2006 06:39 PM
by 5lugSlug

8

2,634

Honda Civic / Del Sol (1992 - 2000)

02, 98, accord, acoord, bank, catalyst, check, efficiency, engine, fouler, honda, light, p0420, po420, system, threshold

Check engine light on, throwing P0420 on a 98 Accord LX

clawhammer on May 15, 2006

May 16, 2006 09:41 AM
by Ross 2.0

12

2,738

Honda Accord (1990 - 2002)

2006, 98, aftermarket, cat, check, checking, civic, emissions, emmission, engine, light, location, luck, p0420, pass

98 civic check engine light cat convtr problem

hobo79 on Apr 19, 2006

Apr 20, 2006 02:37 PM
by hobo79

6

624

Tech / Misc

engine light / o2 sensor sim

RedAndy007 on Feb 13, 2006

Feb 13, 2006 10:01 AM
by RedAndy007

0

514

Tech / Misc

Sporadic Code P0420

dstar on Feb 3, 2006

Feb 3, 2006 07:00 PM
by 86si

1

628

Tech / Misc

98, accord, acord, clk500, code, codes, coupe, evap, fixing, honda, mercedes, p0420, p1457, repair1998, reset, resetting

please help!! how do i fix the code p1457 (evap)? 98 v6 accord

hondaracer4vtec on Jan 27, 2006

Jan 28, 2006 12:36 PM
by hondaracer4vtec

5

6,633

Honda Accord (1990 - 2002)

1998, 2000, 2003, 23l, 500, accord, accords, cat, clk, code, codes, evap, honda, mercedes, p0420, p1457, v6

evap code and catalyst code,, P1457 and P0420

hondaracer4vtec on Jan 26, 2006

Jan 26, 2006 06:32 PM
by hondaracer4vtec

0

3,440

Honda Accord (1990 - 2002)

96 civic CEL-possible catalytic convertor or O2 sensor...need advice

nwin on Jan 23, 2006

Jan 24, 2006 07:44 AM
by nwin

1

547

Honda Civic / Del Sol (1992 - 2000)

1997, 23, 97, civic, code, d16y7, honda, lx, p0420, po420

97 LX with D16Y7 - throws code P0420

bgates2b on Jan 23, 2006

Jan 23, 2006 06:53 PM
by bgates2b

0

637

Honda Civic / Del Sol (1992 - 2000)

anti, antifouler, bung, cel, engine, fouler, integra, jdm, o2, oxygen, p0420, radio, rear, resistor, rid, sensor, shack

Another Method to Get Rid of O2 CEL

tommymoose on Dec 15, 2005

Dec 16, 2005 10:33 AM
by DontBlink

10

1,328

Acura Integra Type-R

67, check, civic, code, engine, faker, honda, light, mil, obd2, obdii, p0420

Help with check engine code.....OBDII - P0420/ MIL 67

mitchb on Dec 11, 2005

Dec 11, 2005 10:15 AM
by erasable180

1

883

Honda Civic / Del Sol (1992 - 2000)

0420, 2002, 96, check, code, computer, engine, esteem, jiffy, light, lube, p0420, pass, reading, smog, suzuki

check engine light problem

liem43 on Nov 14, 2005

Nov 22, 2005 05:18 AM
by chestnut_55

15

1,113

Honda Accord (1990 - 2002)

98, acura, catalyst, check, code, emissions, engine, gsr, honda, integra, interga, light, p0420, seafoam, system, vtec

Failed emissions-check engine light on- code P0420

crf450ex on Oct 21, 2005

Oct 27, 2005 01:52 PM
by acuramike

8

4,383

Acura Integra

91344, accord, additive, autozone, california, catalytic, cel, chevron, cleaner, converter, obd2, p0420, passed, smog, test

How I passed smog in Calif OBD2 P0420 write up Accord Catalytic Converter 1998

arielb1 on Nov 12, 2004

Oct 26, 2005 06:55 PM
by JTB

3

17,872

Honda Accord (1990 - 2002)

Help code P0420

skrewdriver88 on Sep 19, 2005

Sep 19, 2005 04:34 PM
by skrewdriver88

0

381

Honda Civic / Del Sol (1992 - 2000)

0420, 2003, 67, anti, code, fouler, honda, jeep, oxygen, p0420, plug, po420, sensor, spark, wrangler

CEL CODE 67 or P0420

yee SERIOUS on Sep 13, 2005

Sep 14, 2005 07:17 PM
by yee SERIOUS

6

999

Forced Induction

2000, 2003, cat, check, civic, em1, engine, honda, light, nissan, o2, obdii, oxygen, p031, p0420, pho2, primary, sensor, si

2000-Si check engine light question...

chris_B16A2 on Aug 8, 2005

Aug 9, 2005 09:17 PM
by chris_B16A2

15

910

Honda Civic / Del Sol (1992 - 2000)