p0421 - AudiForums.com - Threads Tagged with p0421 - Page 2

AudiForums.com
Tags
Threads Tagged with p0421

Page 2 of 3

2

Threads Tagged with p0421

Thread / Thread Starter

Last Post

Replies

Views

Forum

16805, 2002, 2003, 27, 30, a6, antifouler, audi, bank, bose, cat, catalytic, code, converters, p0421, price, put, quattro, v6

cat converter and bose questions

host23age on 11-08-2010

03-26-2011 11:32 PM
by bigdadi

Go to last post

4

3,596

a6, allroad, audi, autocheck, cat, cats, change, code, error, main, not, p0421, precats, ready, system

Check Engine Rediness Cycle for Pre Cat and Cat Codes

Jayr1000 on 02-14-2011

02-19-2011 12:14 PM
by Jayr1000

Go to last post

3

3,949

1423, 2001, 27, a6, allroad, audi, code, codes, fault, fix, p0421, p0431, p1411, p1423, p1423p1411p0421p0431p1128

00 a6 2.7t with codes p1423,p1411,p0431,p0421

audiLOVESwisco on 02-18-2011

02-19-2011 12:11 PM
by audiLOVESwisco

Go to last post

2

10,596

Computer & Fuel Systems

Question

2002, 30, a4, audi, avk, b6, cod, code, fwd, p0421, p421, passenger, po421, sensor, v6

P0421 on a 2002 3.0 V6 Fwd, what to do ?

ScGiants28 on 02-09-2011

02-09-2011 11:49 PM
by ScGiants28

Go to last post

0

2,206

2004, 30, a4, audi, catalytic, change, converter, location, o2, oxygen, p0421, p0431, sensor, size, thread

2004 Audi A4 3.0 O2 Sensor issues

Nicko on 04-09-2010

12-30-2010 02:21 PM
by moiz

Go to last post

7

14,762

03, 2002, 30, a3, a6, allroad, audi, codes, engine, hesitation, hestitation, low, missing, p0421, p0441, rpm, rpms, stutter

A6 hesitating at low RPM's, codes pulled

Frere Taz on 12-20-2010

12-21-2010 11:57 AM
by Frere Taz

Go to last post

4

2,596

0421, 42, anti, audi, car, cat, code, codes, fouler, mini, p0421, plug, search, spark, trick

OK got the 0421 Code. Options / suggestions?

urban_legend on 11-29-2010

11-30-2010 05:53 PM
by bob martin

Go to last post

4

1,604

0421, 0431, 42, a6, audi, cat, cel, ecu, fix, mil, mini, p0421, p0431, reset, work

Mil p0421, p0431

bigdadi on 10-23-2010

10-25-2010 09:55 AM
by oldmots

Go to last post

1

5,344

2002, 30, a6, audi, cel, clear, close, code, cost, fix, p0421, p0491, p0492, p0741, repair

CEL Codes P0741, P0421, P0491, P0492

drb321 on 09-28-2010

09-28-2010 02:49 PM
by drb321

Go to last post

0

6,301

2001, 28, 28l, a6, audi, catalyst, catalytic, code, converter, efficiency, false, fault, p0421, p0431, p0741, quattro

Experts jump in...

TheA6Pride on 07-26-2010

07-28-2010 12:09 PM
by TheA6Pride

Go to last post

2

1,869

2001, a6, audi, cat, catalyst, code, codes, diode, diose, o2, p0421, purpose, sensor, trick, warm

warm up catalyst code

Turbo123 on 07-14-2010

07-15-2010 11:00 AM
by Turbo123

Go to last post

2

1,690

16805, 17521, 2001, a4, a6, audi, b5, bank, check, code, codes, download, engine, fault, forum, light, p0421, s1, s4

Help with Fault Codes

Firefighter6484 on 12-13-2009

06-28-2010 11:26 AM
by oldmots

Go to last post

8

11,943

2001, 50, a6, audi, change, code, codes, diagnostic, miles, oil, p0156, p0421, po421, quatro, reset, service

P0156... sometime after P0421

alex jb on 05-19-2010

05-20-2010 11:26 AM
by hxgaser

Go to last post

2

3,156

a4, b6, bas, battery, check, empty, engine, gas, p0421, p0431

Check Engine due to fuel?

DanaB6 on 04-29-2010

05-02-2010 01:02 AM
by Dan1969

Go to last post

5

2,156

02, a4, a6, audi, cel, check, code, codes, engine, fixed, list, p0171, p0171b, p0174, p0421

CEL Codes - Self Correcting - P0171 P0174

drb321 on 04-23-2010

04-30-2010 04:39 PM
by drb321

Go to last post

3

25,169

Angry

2002, 30, a4, allroad, audi, b6, bank, block, blocked, cat, code, data, leak, misfire, p0421, quattro, vacuum

2002 3.0 Quattro questions

(

Multi-page thread

1 2)

PaulA4 on 02-27-2010

03-09-2010 02:42 PM
by PaulA4

Go to last post

18

9,891

audi, code, p0421, purge, valve

So FRUSTRATED!!

falafel11 on 03-04-2010

03-04-2010 01:54 PM
by falafel11

Go to last post

0

726

a4, a6, audi, bad, bosch, bwd, catalyst, code, egt, p0421, po421, quattro, s4, sensor, warm, wires

Can the p0421 code really be connected to a vac. leak??

(

Multi-page thread

1 2)

cacaro on 10-20-2009

01-08-2010 03:34 PM
by cacaro

Go to last post

18

4,386

S Car Model Line

02, 02audi, 30, a4, audi, audiforums, engine, forums, p0300, p0304, p0421, po421, problems, sale, v6

02 Audi A4 3.0 Quarttro for sale

707782y on 01-02-2010

01-04-2010 02:57 AM
by 707782y

Go to last post

1

1,454

Archive - Vehicles for Sale

audi, p0421, p0431, p1113, p1131

code check please

RoboRabbit on 05-08-2009

05-10-2009 01:17 AM
by Midniteoyl

Go to last post

2

953

S Car Model Line

Page 2 of 3

2

All times are GMT -4. The time now is 10:05 PM.