p0420 - Honda Civic Forum - Threads Tagged with p0420

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Honda Civic Forum

2006, catalytic, o2 sensor, oxygen, p0420

220k Civic 06 LX P0420 Scan Readings

chikashakya on Feb 10, 2024

Feb 13, 2024
by Colin42

6

478

Engine

P0420 from a Cold air intake

Beleux on Jun 9, 2022

Sep 13, 2022
by Colin42

5

1,745

Engine

Sticky

Is your Check Engine Light, SRS Light, Or ABS Light On? If so, Please Read

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1 2)

streetglower on Aug 14, 2005

Jun 14, 2019
by BrotatoChip

47

437,754

Mechanical Problems/Vehicle Issues and Fix-it Forum

P0420 Code reading

Lordscivic on Mar 26, 2014

Mar 26, 2014
by ezone

2

2,695

Mechanical Problems/Vehicle Issues and Fix-it Forum

17, adapters, antifoul, civic, code, codes, honda, lean, o2code, p0420, vtec

P0420 Code that won't go away. HELP PLEASE!!!!!

emilyejj on Aug 24, 2013

Feb 28, 2014
by Bricktop ivi

8

11,519

Mechanical Problems/Vehicle Issues and Fix-it Forum

Scan code P0420 01/01

Jessereinosas on Feb 18, 2014

Feb 18, 2014
by ezone

1

2,699

Mechanical Problems/Vehicle Issues and Fix-it Forum

catalitic, catalytic, civic, code, codes, converter, em2, honda, misfire, multiple, o2, p0300, p0420, sensor, si

Multiple P0300 codes (misfires) and P0420 (catalytic converter)

semvhu on Nov 14, 2013

Dec 12, 2013
by ezone

10

35,389

7th Generation Civic 2001 - 2005

2000, 2007, 99, civic, code, engine, fix, honda, lx, obd, p0420, p0420p0430, p0430, p0706, si

Troubleshoot Check Engine Light; Codes P0420,P0430, P0706 Need advice!

MrClueless on Oct 25, 2013

Oct 25, 2013
by ezone

1

5,077

Mechanical Problems/Vehicle Issues and Fix-it Forum

2001, 2002, 427, civic, data, dtcfrzf, efficiancy, frame, freeze, honda, information, injector, p0420, reading, scanner, si

Freeze Frame data, any ideas?

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1 2)

civic10ex on Mar 10, 2012

Sep 28, 2013
by civic10ex

40

15,200

Mechanical Problems/Vehicle Issues and Fix-it Forum

back, came, check, civic, engine, flashing, fuse, gas, higher, honda, light, octane, on, p0420, p1361, p2646, pulled

Sticky

If You Are Having Car Problems And Your Check Engine Light Is On, Please Read This!!!

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1 2)

streetglower on Oct 30, 2005

Sep 6, 2013
by UNKNOWN414

36

37,736

Engine DIY

delete

hondaguy2582 on Jul 20, 2013

Aug 8, 2013
by jess21

1

990

Mechanical Problems/Vehicle Issues and Fix-it Forum

02, 2001, 2002, 2003, civic, code, codes, detector, electronic, honda, load, location, p0420, p1298, p1361, trouble

2002 Civic Ex Stalls Codes P1361 & P1298

ykf7b0 on Jun 6, 2013

Jun 8, 2013
by ykf7b0

2

15,655

Mechanical Problems/Vehicle Issues and Fix-it Forum

91, acceleration, cat, civic, clogged, honda, p0420, po420, slow, start

CEL P0420, cat clogged or below efficiency?

got2run5 on Jun 4, 2013

Jun 4, 2013
by got2run5

2

2,293

Mechanical Problems/Vehicle Issues and Fix-it Forum

0420, 2005, civic, code, honda, intermittent, p0420, stumbling

CE code P0420 but have not cat???

jmars808 on May 11, 2013

Jun 1, 2013
by ezone

26

3,766

7th Generation Civic 2001 - 2005

2001, 99, aftermarket, cat, cel, civic, code, codes, engine, forum, header, honda, install, light, p0133, p0420, retrieval

2001 Honda Civic P0133 and P0420 CEL codes after switching air intake to stock

greeni70 on Mar 4, 2013

Mar 17, 2013
by Matt_75

19

7,632

Mechanical Problems/Vehicle Issues and Fix-it Forum

2000, 2002, 99, back, ca, civic, cleared, code, codes, honda, p0240, p0420, pass, pending, si, smog

98 Civic LX: P0240 code and smog (CA)

Brandon04GT on Mar 11, 2013

Mar 14, 2013
by Brandon04GT

14

5,109

Mechanical Problems/Vehicle Issues and Fix-it Forum

01, 2005, 2007, civic, code, codes, engine, honda, o2, obd, obd2, p0420, pics, po420, sensor

P0420 and P0420PD OBDII Codes

EarthCanBeMoved on Jul 9, 2009

Dec 21, 2012
by Rep da 808

7

13,562

7th Generation Civic 2001 - 2005

03, 10, 2002, 2004, 7th, change, civic, fine, gas, hight, honda, loss, mod, noise, octane, p0420, po420, power, problem, runs

P0420 - What is the next step?

Phizy on Oct 16, 2012

Oct 17, 2012
by Phizy

7

2,422

Mechanical Problems/Vehicle Issues and Fix-it Forum

2003, 2008, cat, catalytic, civic, code, converter, fouler, honda, magnaflow, mahnaflow, o2, p0420, po420, problems

Dreaded P0420 Code with new Magnaflow Cat. Converter!

WKD DRGN on Aug 7, 2012

Aug 12, 2012
by asianboy781

4

7,184

Mechanical Problems/Vehicle Issues and Fix-it Forum

99, back, body, civic, code, disconnected, honda, idle, jump, p0420, p0505, reprogram, rough, si, throttle, tps

99 civic si idle problem

1999CivicSi on Jun 15, 2012

Jun 16, 2012
by 1999CivicSi

9

19,753

General Automotive Discussion

02, 0420, cell, check, civic, clear, engine, formula, guaranteed, honda, light, p0420, p420, pass, pcv, seafoam, sensor

Check Engine Light P0420 Help! <-- Car Illiterate

gdubb85 on Mar 11, 2012

May 21, 2012
by odncr

7

20,951

Fuel, Oil, Cleaners & Other Maintenance

02, 2000, 2002, 2004, cel, check, civic, clear, code, engine, fix, honda, light, lx, p0420, replacing, sensor

02 Honda Civic P0420 Code

javiertololo on Jan 6, 2012

May 3, 2012
by ezone

20

41,423

Mechanical Problems/Vehicle Issues and Fix-it Forum

2003, 7th, civic, code, cost, engine, gasket, generation, head, headgasket, honda, issue, missing, p0420, p2646, replacement

P2646 After Head gasket replacement

jnlzr on Oct 8, 2011

Apr 17, 2012
by jnlzr

10

8,466

Mechanical Problems/Vehicle Issues and Fix-it Forum

2005, change, civic, code, ep3, experience, fuel, honda, injector, oil, p0420, plugs, replacement, spark, transmission, work

Help needed - P0420 after maintenance

yogeshsr on Apr 4, 2012

Apr 13, 2012
by ezone

28

9,257

7th Generation Civic 2001 - 2005

156k, 2000, 98, accord, auto, bangs, belt, civic, cose, f23, gear, holding, honda, p0420, power, timing, trans

Pleas help need advice before i make a purchase!!

DavidRey on Mar 15, 2012

Mar 18, 2012
by DavidRey

5

1,404

6th Generation Civic 1996 - 2000

02, 03, 17, 2001, 2002, civic, cost, gas, honda, milage, p0420, p0420honda, p1298, p1298p0420codes, si

P1298 and P0420

tgraves1217 on Mar 13, 2012

Mar 13, 2012
by tgraves1217

0

3,464

Mechanical Problems/Vehicle Issues and Fix-it Forum

2004, 2005, 2008, 98, 99, civic, code, gas, good, honda, hybrid, mileage, odyssey, p0420, repair

P0420 code

giorgiolouis on Feb 21, 2012

Feb 21, 2012
by ezone

1

2,256

8th & 9th Generation Civic 2006 - 2015

2000, 99, cat, civc, civic, code, dx, eld, engine, honda, p0420, p1381, po420, stupid, tuneup, wont

Need some help with a 99 civic I bought.

hawkijustin on Feb 14, 2012

Feb 14, 2012
by hawkijustin

0

1,475

Mechanical Problems/Vehicle Issues and Fix-it Forum

2000, 2001, 2003, accord, auto, bank1, cat, civic, cost, egr, honda, location, lx, p0420, replace, sensor, valve

MEGA problems - Need to swap CAT

dustysaw on Feb 2, 2012

Feb 13, 2012
by lazlong

16

2,534

Mechanical Problems/Vehicle Issues and Fix-it Forum

01, 03, 2003, 2005, 420, civic, code, engine, honda, lx, overheated, overheating, overheats, p0420, p420, problems

2003 EX overheat and p420 code

b715423 on Feb 7, 2012

Feb 8, 2012
by 04 Honda Civic

2

2,557

Mechanical Problems/Vehicle Issues and Fix-it Forum