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Threads Tagged with p0420

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0171, 05, chevy, codes, gm, hemi, p0171, p0174, p0174p0420, p0420, po171, po171and, po174, po420, silverado, ws6

P0171 P0174 P0420 Help

fastjweb on May 28, 2013

May 28, 2013 07:46 PM
by BLK02WS6

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2

4,698

Tuning, Diagnostics, Electronics, and Wiring

2002, 2006, cat, catalyst, efficency, efficiency, gm, gmc, jeep, p0420, p0430, p0430p0420, sierra, system, threshold, truck

My codes: p0420 and p0430

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Multi-page thread

1 2)

blk03 on Jan 16, 2006

Mar 2, 2012 11:43 PM
by Sefa Aulaumea

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18

16,450

Tuning, Diagnostics, Electronics, and Wiring

2004, 53, codes, diablo, diablosport, disable, hp, p0420, programmer, review, reviews, sport, sports, tech, u7193

1 Attachment(s)

diablo sport u7193 programmer (with hardware upgrade)

CULATR on Nov 2, 2010

Nov 10, 2010 04:29 PM
by CULATR

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7

2,055

GM Parts Classifieds

02, 0420, 05, 2005, 43, 53, 97, chevrolet, code, dynatech, f150, gmc, p0420, trans, truck, v6

P0420 code and best way to lower?

heybro on Apr 19, 2010

Apr 21, 2010 11:37 AM
by fastnblu

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7

1,449

GMT 800 & Older GM General Discussion

2000, 2001, 420, 53, avalanche, chevrolet, code, gm, ls1, maf, p0420, po, po420, po430, silverado

P0420 Catalyst Ineficiency Bank 1

blades11b on Dec 30, 2009

Dec 30, 2009 09:50 PM
by viciousknid

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4

7,244

GM Engine & Exhaust Performance

Question

2000, 43, 96, air, code, codes, gmc, p0420, p0420p0430, p0430, ram, sierra, silverado, threshold, z71

Need Advise on P0420 code on 2000 Z71

chuckmc8 on Jul 29, 2009

Aug 2, 2009 01:00 PM
by budhayes3

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9

7,378

GM Engine & Exhaust Performance

bad, broken, catalytic, converter, jumpy, lazy, light, o2, off, oxygen, p0420, potential, problem, sensor, srt4, tach

Would a bad catalytic converter cause a lazy oxygen sensor?

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Multi-page thread

1 2)

hirdlej on Jun 24, 2009

Jun 25, 2009 09:59 PM
by hirdlej

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15

7,617

GM Engine & Exhaust Performance

03, 43, 53, 97, c1500, chevy, code, engine, gm, hills, misfire, misfiring, miss, p0420, sierra, stall, truck

Anyone ever see misfiring cause a P0420 code to be tripped?

hirdlej on Jun 8, 2009

Jun 9, 2009 04:19 PM
by budhayes3

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7

8,253

Tuning, Diagnostics, Electronics, and Wiring

delete, efi, efilive, lincoln, live, misfire, o2, p0300, p0420, p0430, sensors, silverado, trailblazer, tuning, whipple

2 Attachment(s)

Deleting Rear o2's with EFIlive - HOW TO?

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Multi-page thread

1 2)

foxySS on Sep 5, 2008

Sep 6, 2008 06:05 PM
by foxySS

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12

10,942

Tuning, Diagnostics, Electronics, and Wiring

Question

p0420, s10, seafoam

1 Attachment(s)

Help Please

bravo1188 on Mar 23, 2008

Mar 24, 2008 11:45 AM
by jakebdb56

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8

791

INTERNAL ENGINE MODIFICATIONS

1500, 2004, 43l, chevy, code, dynatech, f150, otc, p0420, p0430, po430, shoot, silverado, trouble, v6

got a code with headers...

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Multi-page thread

1 2)

Allgonoshow on Feb 12, 2008

Feb 15, 2008 05:41 PM
by TURBHOE

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14

1,532

Tuning, Diagnostics, Electronics, and Wiring

0420, 2003, 420, 99, chevy, code, error, gauge, gm, p0420, po420, scan, silverado, trouble, yukon

Trouble Code P0420

Sambo53 on Nov 7, 2007

Nov 13, 2007 05:26 AM
by mwalls54

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7

11,655

GMT 800 & Older GM General Discussion

2006, bank, catalyst, efficiency, low, p0420, sts, system

STS cat question

Switched on Jul 19, 2007

Jul 20, 2007 01:09 AM
by cpelton

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2

592

FORCED INDUCTION

1500, 2000, 48, c1500, catless, chevrolet, chevy, code, error, o2, p0420, pipe, sensors, silverado, truck

P0420

97sicksled on Jun 15, 2007

Jun 16, 2007 12:35 PM
by 97sicksled

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4

1,574

Tuning, Diagnostics, Electronics, and Wiring

04, 420, code, diagnostic, gm, hemi, p0420, p0420p0463, p0463, po, po420, po463

Codes P0420 and P0463 together

Superado on Mar 6, 2006

Mar 6, 2006 03:26 PM
by Superado

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0

895

Tuning, Diagnostics, Electronics, and Wiring

01, 01blackerado, 1500, 2000, 2005, code, codes, engine, p0410, p0420, p420, po420, powerstroke, silverado, ssr

Threw a code P0420

01Blackerado on Jun 16, 2005

Jun 17, 2005 05:09 PM
by 01Blackerado

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5

2,357

Tuning, Diagnostics, Electronics, and Wiring

53, headers, p0420

Installing headers and duals this weekend...

Gremlin5.3 on Jan 27, 2004

Jan 27, 2004 04:05 PM
by Gremlin5.3

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0

514

GM Engine & Exhaust Performance

700mv, p0420

Cats and rear 02 sensors

GREGGO on Dec 5, 2003

Dec 5, 2003 11:25 AM
by sleepersilverado

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2

766

GM Engine & Exhaust Performance

60, aftermarket, code, exhaust, gmengine, headers, hemi, ls1tech, p0420, silverado

Beware P0420 and aftermarket headers

Tom@SpeedInc on Oct 9, 2003

Oct 9, 2003 04:27 PM
by XLR8NSS

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2

922

GM Engine & Exhaust Performance

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