p0420 - Unofficial Honda FIT Forums - Threads Tagged with p0420

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Threads Tagged with p0420

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p0135, p0420

8 Attachment(s)

P0135 issue

Fwogle on Feb 20, 2026

Mar 2, 2026 11:58 AM
by Fwogle

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5

239

1st Generation (GD 01-08)

200, car, catalyst, code, fit, fix, hona, honda, jazz, miles, p0420, po420, premium, problem, turn

Code P0420 Confusion

Youaretyping on Jul 29, 2010

Aug 6, 2024 01:19 PM
by Frenzal

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18

77,423

General Fit Talk

code, coil, fit, honda, p0420, pack

P0420 Code Related to Coil Packs?

GlennO511 on Apr 18, 2014

Feb 25, 2023 07:52 AM
by Billy Fit

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2

22,816

Fit DIY: Repair & Maintenance

catalytic, misfires, o2 sensor, p0420

Misfire Problem followed by P0420 code

(

Multi-page thread

1 2)

Nussjohnathan@gmail.com on May 12, 2016

Nov 23, 2020 09:03 PM
by GAFIT

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21

50,116

1st Generation (GD 01-08)

Exclamation

catalyst, don't-be-a-sucker, p0420

P0420 Cautionary Tale - Catalyst or Leak

bzdang on Oct 21, 2020

Oct 22, 2020 04:41 PM
by fitnut

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4

1,194

3rd Generation (2015+)

p0301, p0302, p0303, p0304, p0420

At my wits end with my 08 Fit Sport

(

Multi-page thread

1 2)

iforgetus on Mar 16, 2018

Nov 26, 2019 08:54 AM
by tyrtill

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25

6,466

1st Generation (GD 01-08)

Exclamation

bank 1, catalyst sytem efficiency, catalytic converter, o2 sensor, p0420

P0420: New Cat Needed?

Alex Smith on Jan 23, 2018

Jan 26, 2018 08:20 AM
by spike55_bmw

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1

3,904

2nd Generation (GE 08-13)

Question

2007, 2008, catalyst, code, diy, efficiency, fit, fix, frame, freeze, honda, low, p0420, po420, system

P0420 ...low catalyst system efficiency?

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Multi-page thread

1 2)

Paul.meybaum@mts.com on Dec 10, 2011

Jan 18, 2014 01:08 AM
by JamesBizzle

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35

16,201

Fit DIY: Repair & Maintenance

1, 30, 420, bank, catalyst, check, efficiency, fit, hond, honda, images, news, p0420, po, service, system, threshold

P0420 HONDA - Catalyst System Efficiency Below Threshold Bank 1

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Multi-page thread

1 2)

inspire007 on Jan 29, 2013

Oct 17, 2013 01:42 AM
by loudbang

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28

27,860

2nd Generation (GE 08-13)

Lightbulb

51354, 94854, 99354, cat, catalytic, convert, converter, delete, fit, fitfreak, fitfreaksnet, fix, honda, magnaflow, p0420, replacement

Cat Converter Replacement: Magnaflow 51354 vs. 94854

RomeoJunior on Jun 13, 2012

Jun 13, 2012 11:17 AM
by RomeoJunior

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0

2,481

Fit DIY: Repair & Maintenance

Question

2008, actron, be, code, control, cp9575, error, evap, fit, honda, o2s12, p0138, p0420, scion, tc

Ye olde P0420

Clydesdale on May 3, 2012

May 4, 2012 07:20 PM
by Clydesdale

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16

7,596

Fit DIY: Repair & Maintenance

08, 2007, af, clean, code, codes, cost, dtc, engine, fit, honda, maintenance, p0135, p0420, sensor

P0135 Code

BansheeScratch on Nov 14, 2011

Nov 17, 2011 01:31 PM
by Previc93

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2

13,491

Fit DIY: Repair & Maintenance

Question

08, 2007, branded, c0de, code, emission, emissions, fit, honda, p0420, salvaged, title, titles, warranty, year

About the emissions warranty

blackrandom on Oct 7, 2011

Nov 9, 2011 01:17 PM
by Scratch&Dent

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13

9,208

1st Generation (GD 01-08)

Unhappy

0420, 07, 150k, 2006, 2007, c0de, code, fit, fix, honda, p0420, p420, po420, sport

P0420 suggestions

ThatsmyFitty on Nov 19, 2010

Nov 19, 2010 08:15 PM
by john380

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4

4,275

General Fit Talk

2007, american, bad, catalatic, catalytic, code, converter, converters, covered, fit, forum, honda, number, p0420, warranty

Bad Catalytic Converter

super_fit on May 28, 2010

May 28, 2010 03:24 PM
by super_fit

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3

15,468

1st Generation (GD 01-08)

200911, fender, fit, honda, jazz, p0420

Anybody replaced a fender?

proletariandan on Nov 30, 2009

Nov 30, 2009 11:59 PM
by HONDAMATIC

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1

1,450

Fit DIY: Repair & Maintenance

accord, aem, cat, catalyst, crx, fic, honda, ignore, limp, mode, p0420, simulation

O2 simiulator

Spooling on Jan 3, 2009

Feb 10, 2009 01:15 AM
by explosivpotato

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11

2,302

Fit Engine Modifications, Motor Swaps, ECU Tuning

02, 2002, 2005, catalyst, caused, civic, code, fit, honda, p0420, si

P0420 (catalyst) code

MAT on Sep 16, 2005

Sep 19, 2005 11:30 AM
by MAT

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3

2,870

Other Car Related Discussions

1998, 98, accord, cat, catalytic, check, code, codes, converter, engine, fit, honda, installing, light, midas, p0420, warranty

Failing catalytic converter code

jbourgeois on Jul 29, 2005

Aug 5, 2005 02:34 PM
by jbourgeois

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6

5,254

Other Car Related Discussions

01, cat, catalyst, code, efficiency, fit, fix, honda, insite, low, p0420, p420, prelude, replaced, system

P0420 after cat replaced

goldenset on May 4, 2005

May 4, 2005 11:16 AM
by goldenset

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6

2,087

Other Car Related Discussions

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