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Chevrolet Forum - Chevy Enthusiasts Forums
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p0420
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Threads Tagged with
p0420
Thread / Thread Starter
Last Post
Replies
Views
Forum
Car Randomly Dies but Keeps Driving.
lilnoah
on Nov 11, 2024
Sep 1, 2025
3:07 AM
by
leann7603
1
11,609
Cavalier
1999 chev silverado 5.3 code P0171, P0172 and P0420
(
1
2
)
MinnesotaBum
on Sep 10, 2009
Oct 21, 2020
9:18 PM
by
Zwingsterboss
10
52,868
Silverado, Sierra & Fullsize Pick-ups
Have 3 new codes...are they related?
Hopwall765
on Apr 8, 2018
Apr 11, 2018
11:55 AM
by
Hopwall765
4
1,478
General Tech
P0420/P0430 OBD code - what a bad catalytic converter looks like
(
1
2
)
CableSux
on Sep 8, 2013
Aug 10, 2017
10:28 PM
by
ajmboy
10
82,476
Express, Savana & G-Series Vans
2015 Chevrolet Tahoe LT P0430 Diagnostic Code
SalStone
on May 25, 2017
May 25, 2017
12:50 PM
by
SalStone
0
2,647
Tahoe & Suburban DIY and Useful Threads
MIL on: codes P0420 and P0341
malibuboo
on Aug 22, 2015
Aug 22, 2015
10:25 AM
by
malibuboo
0
5,535
Malibu
Popped P0420 Code After New Exhaust Installed
Drugar123
on Apr 13, 2015
Apr 13, 2015
9:09 PM
by
Drugar123
4
6,171
Tahoe & Suburban
09 p0230 and p0420 codes + wiper issue
Carve
on Apr 9, 2015
Apr 10, 2015
7:21 AM
by
tech2
1
3,467
Cobalt
99 Suburban p0102, 0103, 0420, 0430
robsonak
on Dec 19, 2014
Dec 23, 2014
7:39 AM
by
in2pro
3
5,607
Tahoe & Suburban
Air pump and p0410 & p0420
WBrosVenture01
on Mar 2, 2013
Oct 26, 2013
7:50 PM
by
WBrosVenture01
2
6,483
Venture
2007 Aveo code p0420 HELP!!!!
zombiebanana88
on Sep 15, 2013
Sep 15, 2013
5:13 PM
by
zombiebanana88
0
21,242
Other
$50 2002 silverado c1500
(
1
2
)
Mikereynolds9
on Apr 2, 2013
Apr 4, 2013
3:11 PM
by
Mikereynolds9
10
5,073
Silverado, Sierra & Fullsize Pick-ups
Code p0171
Brian99_03
on Feb 20, 2013
Feb 20, 2013
8:29 PM
by
tech2
1
8,675
Monte Carlo & Lumina
2002 Suburban LS - Catalytic Converter
Delray1969
on Mar 21, 2012
Jan 19, 2013
10:57 AM
by
markonion7989
7
21,450
Tahoe & Suburban
P0420 Code 4th Converter
franke
on Dec 13, 2012
Dec 14, 2012
3:50 PM
by
franke
4
7,667
General Tech
ODB II Freeze Frame Data Help
(
1
2
)
Tegnus
on Jul 31, 2012
Sep 6, 2012
12:17 PM
by
Tegnus
10
14,732
Venture
Stumped!
Dazed & Conused
on Sep 3, 2012
Sep 5, 2012
5:26 AM
by
junkman104
1
2,080
Impala
p0420
Rick Blackburn
on Apr 2, 2012
Apr 2, 2012
9:01 PM
by
MDTAHOE
1
3,061
Silverado, Sierra & Fullsize Pick-ups
miss and a po420 code on a 07 newstyle silverado
(
1
2
)
94racing
on Feb 6, 2012
Feb 22, 2012
7:38 AM
by
94racing
16
42,879
Silverado, Sierra & Fullsize Pick-ups
2001 Venture is Sluggish
cfdengineer
on Jun 24, 2011
Jun 26, 2011
9:34 PM
by
my3girlz
1
5,272
Venture
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