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Mitsubishi Forum - Mitsubishi Enthusiast Forums
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Threads Tagged with
p0421
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Threads Tagged with
p0421
Thread / Thread Starter
Last Post
Replies
Views
Forum
Check Enginer Light is Never Ending!!
saltieann
on 12-20-2010
12-21-2010
08:35 AM
by
Fe2O3
2
1,556
Mitsubishi Lancer and Lancer Sportback
Getting a P0421 code! Popping sound in exhaust. Odd idle.
rowebil
on 10-20-2010
10-20-2010
06:44 PM
by
rowebil
0
2,460
3rd Generation
OBDII code P0421 - What should I do?
Meph1st0
on 10-13-2010
10-13-2010
11:38 PM
by
Meph1st0
0
7,707
3rd Generation
OBD Code p0135 and P0421
se7en
on 01-08-2009
10-06-2010
10:17 AM
by
snowmobiler168
8
12,298
3rd Generation
Dtc p0421
bob1952
on 08-17-2010
08-17-2010
06:44 PM
by
bob1952
0
1,493
New Members Area
I need a little help: P0421 and P0431
thesammythecurse
on 04-21-2010
04-27-2010
05:25 PM
by
thesammythecurse
5
36,150
Mitsubishi Galant
My baby is sick. . .
nawgee
on 03-21-2008
12-23-2009
04:53 PM
by
kingkingwolf
9
1,264
Mitsubishi Lancer and Lancer Sportback
so i got this code P0421
(
1
2
3
)
blufabric
on 03-25-2008
12-23-2009
04:29 PM
by
kingkingwolf
29
13,461
Mitsubishi Lancer and Lancer Sportback
New and looking for help
Electrofelt
on 07-28-2009
07-28-2009
05:32 PM
by
dsm1990gsx
1
629
Intake, Headers and Exhaust
P0421 Yes i searched..
Schnupper
on 07-10-2009
07-20-2009
07:11 PM
by
dsm1990gsx
7
2,570
Mitsubishi Lancer and Lancer Sportback
P0400 & p0421
sierrenity
on 04-29-2009
04-29-2009
10:09 AM
by
sierrenity
0
3,248
Mitsubishi Mirage
OBD code P0421, whats the fix?
Fe2O3
on 01-20-2009
02-06-2009
10:41 PM
by
dsm1990gsx
6
9,176
Mitsubishi Lancer and Lancer Sportback
2001 ES - Many problems...
dwayotte
on 01-27-2009
01-27-2009
01:01 AM
by
dwayotte
0
2,496
Mitsubishi Galant
OBD Code P0421
jmil
on 05-11-2008
05-12-2008
04:21 PM
by
dsm1990gsx
6
9,665
3rd Generation
'99 Montero Catalytic Converter & Mac Auto Parts
jrmdir
on 01-06-2007
01-06-2007
04:09 PM
by
jrmdir
0
6,366
Mitsubishi Montero & Montero Sport
99 Montero OBD Code Help: P0421
jrmdir
on 12-15-2006
12-18-2006
05:49 PM
by
jrmdir
2
4,738
Mitsubishi Montero & Montero Sport
Spark plugs
(
1
2
)
MyEclipse
on 05-23-2006
05-26-2006
09:49 AM
by
TheEngineer
10
1,851
3rd Generation
P0421, new 2 this...help!
PoconosKel
on 03-26-2004
03-26-2004
09:58 PM
by
PoconosKel
0
2,733
New Members Area
P0421, dont understand plz HELP!
PoconosKel
on 03-26-2004
03-26-2004
09:56 PM
by
PoconosKel
0
3,399
Mitsubishi Galant
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