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Threads Tagged with
po421
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Forum
Sputtering.. some kind of misfire??
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pumpdog720
on Apr 12, 2004
Jul 19, 2017
09:04 PM
by
EdT
57
33,256
Lancer Troubleshooting
Several Error Codes
ronjoe1
on Sep 10, 2009
Mar 25, 2014
01:18 AM
by
RT78
2
1,274
Lancer Tranny/Drivetrain Tech
Check Engine Code P0421 on a catless Evo
TURBO_S2K
on Apr 16, 2012
Apr 16, 2012
11:34 PM
by
sujinX
3
4,283
Evo Engine / Turbo / Drivetrain
PO421:Warm Up Catalyst-below threshold (bank #1) CEL
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Last Page
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SLVROZ_03
on Dec 1, 2007
Jan 21, 2012
05:11 PM
by
02modlanceroz
46
69,910
Lancer Troubleshooting
p0421
moebob
on Aug 22, 2011
Sep 6, 2011
08:38 PM
by
initialg86
3
1,433
Lancer Engine Tech
P0421 Need Help ASAP
nawgee
on May 10, 2011
Jun 2, 2011
12:46 PM
by
Mitsubitshi_Fan
4
2,487
Lancer Troubleshooting
Po421 code!!! =[
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barbiebxtch
on Mar 8, 2011
Mar 8, 2011
07:12 PM
by
mci2727
20
4,580
Lancer Troubleshooting
Code P0421- Call Mitsu before you do anything!
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Swankzer
on Jun 2, 2008
Apr 6, 2010
05:52 PM
by
OZ_racing
40
73,541
Lancer Troubleshooting
p0421 code
jacfumo
on Jan 17, 2010
Feb 4, 2010
12:14 AM
by
Sn0w Man
6
7,783
Lancer How To Requests / Questions / Tips
Po421
bige9920
on Oct 3, 2009
Oct 28, 2009
03:23 PM
by
bige9920
8
1,018
Lancer Troubleshooting
Po421
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02-Lancer-Es
on Jan 12, 2008
Oct 7, 2009
07:19 AM
by
Jehuty
29
2,947
Lancer Engine Tech
P0421
bluelancer20028
on Jul 11, 2009
Sep 24, 2009
09:45 PM
by
Ketchup2me
5
1,794
Lancer Troubleshooting
PO421:Warm Up Catalyst-below threshold (bank #1) CEL
js0102
on Jun 15, 2009
Jun 19, 2009
02:19 PM
by
js0102
4
2,739
Lancer Troubleshooting
Fuel Inlet Restrictor where did it go??? ohh AND P0421
JasonKnight
on Aug 29, 2006
Mar 26, 2007
07:57 AM
by
dradnc1
10
5,058
Lancer Troubleshooting
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