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Honda-Tech - Honda Forum Discussion
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Threads Tagged with
po420
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Threads Tagged with
po420
Thread / Thread Starter
Last Post
Replies
Views
Forum
car "knocks" or "taps" when cold - goes away after warmed up.
EJ8_Enthusiast
on Oct 28, 2008
Oct 28, 2008
04:55 PM
by
iamthefollower
3
2,387
Honda Civic / Del Sol (1992 - 2000)
98 CRV need P0420 help
shooter0577
on Jul 3, 2006
Sep 25, 2008
08:55 AM
by
shaggyeg6si
7
13,772
Honda Minivans, Crossovers, and Trucks
did defouler mod for P0420, how long before I can expect the CEL to come back if its going to?
EJ8_Enthusiast
on Sep 18, 2008
Sep 18, 2008
07:05 PM
by
geebs
1
2,153
Honda Civic / Del Sol (1992 - 2000)
Thinking of defouler mod to rid P0420 - How can I check that the O2 sensor is working?
EJ8_Enthusiast
on Sep 16, 2008
Sep 16, 2008
03:55 PM
by
slowcivic2k
3
4,594
Honda Civic / Del Sol (1992 - 2000)
Catalytic Convertor
1996hondaaccord
on Jul 27, 2008
Aug 9, 2008
03:51 AM
by
JDM_DC4_Fanatic
6
1,128
Honda Accord (1990 - 2002)
2002 CRV Code PO420
neckman
on Jun 18, 2008
Aug 7, 2008
09:30 AM
by
shaggyeg6si
11
33,144
Honda Minivans, Crossovers, and Trucks
First time civic owner- P0420 with background on car...
00_Civic_EX_Newb
on Jul 17, 2008
Jul 22, 2008
09:00 PM
by
speedracer9k
10
2,527
Honda Civic / Del Sol (1992 - 2000)
why is my engine stuttering/hesitating?!?
(
1
2
)
typeR#338
on Jun 24, 2008
Jul 18, 2008
08:34 AM
by
Devon M
45
3,782
Acura Integra Type-R
OBD2 CODE P0420
JDMPHILEP91
on Jul 13, 2008
Jul 15, 2008
07:49 PM
by
JDMPHILEP91
18
6,777
Honda Civic / Del Sol (1992 - 2000)
P0420 Catalyst System Efficiency Below Threshold
nplsdvr
on Jun 29, 2008
Jun 29, 2008
02:13 PM
by
KJMRide
1
853
Honda Civic / Del Sol (1992 - 2000)
Honda Accord LX 1998, P0420 Code
tomasbermeo85
on Jan 4, 2008
May 24, 2008
06:18 AM
by
b18crx
3
1,884
Honda Accord (1990 - 2002)
1996 Accord with code p0420- cat converter...help
deblas66
on Mar 19, 2008
Mar 19, 2008
10:32 AM
by
deblas66
0
1,038
Honda Accord (1990 - 2002)
CHECK ENGINE LIGHT, need help quick. P0420 is the code
96hatchy
on Nov 2, 2007
Mar 15, 2008
03:02 PM
by
1990_integra_DA9
9
5,896
Honda Civic / Del Sol (1992 - 2000)
code p0420 catalyst systen efficiency below threshold [bank 1 ]
poorhonda
on Feb 25, 2008
Feb 25, 2008
08:30 PM
by
My JDM EJ8
4
3,046
Honda Civic / Del Sol (1992 - 2000)
O2 Specs....
killalude848484
on Feb 5, 2008
Feb 6, 2008
09:53 AM
by
Acidcrakker
3
933
Honda Prelude
2000 civic 1.6L pings, CEL p0420
thetmaxx
on Dec 24, 2007
Dec 24, 2007
01:47 PM
by
thetmaxx
3
3,620
Honda Civic / Del Sol (1992 - 2000)
1998 Accord gas cap / P0420 code??
northworm
on Nov 9, 2007
Nov 10, 2007
09:24 AM
by
Chiovnidca
7
8,128
Honda Accord (1990 - 2002)
CEL Code : P0420
Frostwhite_DB8
on Apr 14, 2007
Jun 2, 2007
09:33 AM
by
ForceFed Motorsports
14
1,845
Acura Integra
the accord is throwning p0420 code.
accordinglyevil
on Mar 30, 2007
Mar 30, 2007
04:54 PM
by
accordinglyevil
0
726
Honda Accord (1990 - 2002)
Engine Code Po420
AlwayzSpoolin
on Mar 18, 2007
Mar 18, 2007
07:56 PM
by
1998b18c1
1
2,168
Acura Integra
1999 v6 accord po 420 code
denmick
on Jan 4, 2007
Jan 4, 2007
05:07 PM
by
smokin151
3
1,362
Honda Accord (1990 - 2002)
CEL: P0420 "Catalyst System Efficiency Below Threshold"
ieatrice
on Nov 14, 2006
Nov 14, 2006
12:04 PM
by
Relic1
7
1,891
Honda Civic / Del Sol (1992 - 2000)
6th Gen V6: Got CEL, PO420 -- will need to pass CA smog!
piggy
on Sep 26, 2006
Sep 26, 2006
12:52 PM
by
piggy
0
577
Honda Accord (1990 - 2002)
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
939
Honda Accord (1990 - 2002)
need help on these ecu codes
gmrnguyen
on Jul 26, 2006
Jul 26, 2006
03:50 PM
by
bg-33p
3
1,088
Acura Integra
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
4,261
Honda Accord (1990 - 2002)
po420 ej8
another silver ej8
on May 22, 2006
May 24, 2006
12:55 PM
by
another silver ej8
8
1,812
Honda Civic / Del Sol (1992 - 2000)
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
2,729
Honda Accord (1990 - 2002)
check engine codes on my ls
96LsBang
on May 5, 2006
May 5, 2006
12:18 PM
by
purplegsr
6
951
Acura Integra
Sporadic Code P0420
dstar
on Feb 3, 2006
Feb 3, 2006
07:00 PM
by
86si
1
622
Tech / Misc
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