p0420 - Rennlist - Porsche Discussion Forums - Threads Tagged with p0420

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Threads Tagged with p0420

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996, 997s, bad, cats, codes, gas, mileage, p0420, p0420p0430, p0430, p0430p0420, pass, poor, porsche, smog, yourca

Alternatives?? P0430 / P0420

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Multi-page thread

1 2)

morganabowen on 05-24-2013

09-14-2021 07:19 AM
by zbomb

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28

15,504

designtek, p0420, p0430

New Owner w/ question re DesignTek

spencerusa on 12-28-2014

01-16-2015 09:45 PM
by FRUNKenstein

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4

1,408

Question

781, bosch, calculated, digital, electronics, gt3, load, motor, motronic, p0420

P0660, P1043, P0420, P0430 on 2006 C2S (X51)

Mspross on 04-09-2014

04-10-2014 12:12 PM
by Mspross

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3

2,552

9971, p0420, p0430

Uh oh...CEL

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kalasend on 08-07-2013

08-09-2013 05:39 PM
by gpjli2

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16

1,962

01, 03, 04, 05, 09, altima, cid, cid01, cid05, lean, p0420, rich, sensor, switch, tid, tid05, tid05cid01, tid09, time

P0420 on 2003 Targa

pieleapulii on 04-17-2013

07-28-2013 04:06 PM
by kpl

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5

5,990

996, 997, aftermarket, cat, cats, codes, date, manufacturing, p0420, turbo

P0420 error code - Do aftermarket parts need to comply with Federal warranty?

nota_troll on 05-14-2013

05-15-2013 11:32 PM
by mdrums

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7

1,356

997 Turbo Forum

2002, 420, 430, 996, check, code, engine, evap, fault, issues, light, p0420, po430, porsche, stype, yukon

Fault codes po420 and po430

morganabowen on 08-10-2012

08-14-2012 08:38 PM
by morganabowen

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7

6,759

bank, catalyst, clear, code, codes, cold, conversion, efficiency, hot, p042, p0420, reappear, system, test, threshold, twc, vehicle, weather

What do these codes really mean?

LRBill on 03-28-2012

03-29-2012 10:49 AM
by LRBill

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9

2,365

02, 996, 996tt, boxster, bung, cel, cheat, code, extender, extenders, extension, fix, gt3, o2, p0420, porsche, sensor

CEL fix?

Nikon FM on 11-08-2011

11-11-2011 09:21 PM
by Nikon FM

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8

2,989

996 Turbo Forum

cat, clean, converter, fix, gas, lacquee, lacquer, laquer, laquor, p00040, p0420, p0430, porsche, tank, techron, thiner, thinner

3 Attachment(s)

Washing your cat to fix P0420

Ahsai on 06-16-2011

06-29-2011 11:45 PM
by fpb111

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9

5,594

0420, autozone, bypass, code, durametric, engine, leaking, light, make, muffler, p0420, pass, postcat, reader, rennlist

CEL with code P0420 after muffler bypass

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desidon on 06-17-2011

06-21-2011 06:07 PM
by desidon

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21

5,787

cel, errror, exhaust, f355, intermittant, intermittent, leak, oxygen, p0420, sensor, solution

Intermittent CEL

Speed on 11-05-2010

11-05-2010 07:57 PM
by Macster

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1

715

2002, 996, alright, bank, body, boxster, code, drive, p0420, p0430, po420, rennlist, side, throttle, turbo, yukon

CEL code p0420

PasPar2 on 09-14-2010

10-10-2010 09:35 PM
by PasPar2

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5

3,658

02, 03, 04bmw530i, 2003, 530i, bmw, bmw530i, code, e46, highway, m3, o2senors, p0420, p0430, replace, tundra

4 Attachment(s)

CEL codes

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Multi-page thread

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CT03911 on 08-25-2010

08-28-2010 11:30 PM
by mooty

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21

1,884

996 GT2/GT3 Forum

2003, 911, 986, 997, cat, cel, code, effiecency, error, p0420, p0420p0430, p0430, porsche, turbo, yukon

CEL P0420/P0430

pilot996 on 11-18-2009

11-20-2009 01:07 AM
by Macster

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6

12,983

996 Turbo Forum

1, cam, cel, codes, cylinder, emission, inspection, misfire, p0420, p0453, p1110, p1313, p1530, porsche, relevant, sensor

Am I getting ripped off?

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Multi-page thread

1 2 3 4)

sleepmd on 03-26-2009

08-12-2009 05:57 AM
by Paul Fraser

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45

16,828

bank, converter, lincoln, lr3, mks, p0420, p1130

Need Advice on O2 and Cat Codes

Wildcat05 on 11-18-2008

11-27-2008 01:20 PM
by Macster

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10

1,242

Boxster & Boxster S (986) Forum

997, 997tt, boxster, catalyst, check, cobalt, code, efficiency, engine, error, exhaust, fabspeed, light, p0420, p2099, porsche

Check engine light

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Multi-page thread

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rmira on 08-16-2008

09-09-2008 12:26 PM
by E55AMG

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22

5,435

997 Turbo Forum

2002, 911, 997, cats, cel, p0420, p0430, porsche, q45

P0430 CEL

Taj on 04-03-2008

04-04-2008 09:47 AM
by WHB Porsche

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6

1,281

993 Turbo Forum

1994, b12, berry, berryman, berrymans, diy, due, emissions, f150, forums, man, p0420, referee, smog, testing

Going to CA smog ref. Will Berryman's B12 affect the smog test?

Jay Karolyi on 11-29-2007

11-29-2007 05:18 PM
by race911

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1

1,731

0420, 1680720, 993, abs, cel, code, nuisance, p0420, reader

2 Attachment(s)

Just bought a 993! CEL came on w/weird code (0420)

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Multi-page thread

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Jay Karolyi on 11-27-2007

11-28-2007 04:41 PM
by 1pcarnut

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17

1,911

Unhappy

996, cap, code, engine, filler, light, p0420, porsche, touareg, warning

Check Engine Light

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Multi-page thread

1 2)

dwccfp on 01-28-2007

01-30-2007 12:49 AM
by hwk72

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18

2,343

Question

996tt, deal, fabspeed, italian, oxygen, p0420, sensors, tripping, tuneup

What's the deal with CEL and oxygen sensors??

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Multi-page thread

1 2 3)

tkerrmd on 09-19-2005

11-13-2006 02:18 PM
by Oak

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35

2,487

996 Turbo Forum

Question

2001, bank, bank1, boxster, car, catalyst, chip, code, efficiency, mustang, p0420, p420, porsche, system, threshold

P0420 Catalyst System Efficiency Below Threshold (Bank 1) code

johnneurauter on 09-07-2006

09-08-2006 10:46 AM
by johnneurauter

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5

4,077

993 Turbo Forum

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