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2002, allroad, audi, combi, fix, p0491, p0492, thd, valves

P0491 P0492 SAI Issues!

jinsoojoo on 12-14-2013

12-16-2013 02:46 PM
by JustMtnB44

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4

6,681

2001, 2004, 28lv6, a4, air, audi, check, engine, gmc, injection, light, p0491, p0492, system, yukon

Check engine light came on. 2001 Audi A4 codes p0491 and p0492 came up.

jmineses on 09-19-2013

09-19-2013 01:21 PM
by 4Driver4

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1

2,937

A4 (B5 Platform) Discussion

2001, 2005, 2010, 30, a4, a6, a8, audi, code, codes, diagnosic, obd2, p0491, p0492, q5, trouble

What are MIL Codes P0491 and P0492

foxmoor on 08-08-2012

08-22-2013 06:00 AM
by spijun

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3

22,373

Q5/SQ5 MKI (8R) Discussion

2001, 2002, 2003, 42, a4, a6, audi, bentley, check, code, engine, fault, light, p0491, p0492

Fault code help P0491 P0492 Check engine

compassluxor on 03-03-2004

05-24-2013 12:12 PM
by allroad2point7t

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6

145,474

A8 / S8 (D2 Platform) Discussion

03, 2001, 2004, a6, audi, code, p0491

03 A6 quattro - P0491

jpjmustang on 08-31-2012

08-31-2012 07:19 AM
by jpjmustang

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2

1,511

A6 / S6 (C5 Platform) Discussion

03, 2002, 2003, a4, a6, allroad, aud1, audi, bmw, check, code, codes, engine, p0491, p0492, po491, reset

2 Attachment(s)

P0491 & P0492 AFTER running for 10 minutes

indytrucks on 09-13-2011

09-13-2011 06:55 AM
by indytrucks

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5

8,488

04, 2003, a6, air, allroad, audi, bank, code, engine, fix, injection, p0491, p0492, secondary, system

P0491 and P0492 first and second bank secondary air injection code

Zuds41 on 07-18-2011

07-23-2011 12:20 AM
by tester123

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2

7,868

A6 / S6 (C5 Platform) Discussion

2002, 2004, 27t, 42, a4, a6, a8, audi, c5, code, fix, p0491, p0492, repair, ross, tech

Why am I receiving codes P0491 and P0492

edel on 06-01-2011

06-02-2011 02:32 PM
by a44me2

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3

5,081

A4 (B6 Platform) Discussion

03, 27t, audi, fix, intake, manifold, p0491

2 Attachment(s)

Need help identifying a part....

sparkling wiggles on 04-12-2011

04-13-2011 05:47 AM
by sparkling wiggles

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6

1,057

A6 / S6 (C5 Platform) Discussion

2001, 2003, 2004, 42, a6, allroad, audi, b6, code, engine, fault, p0491, p0492, s4, s6, service

Check Engine sorry i'm new with audi

Evilwrong on 04-10-2011

04-10-2011 02:09 PM
by Evilwrong

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0

1,766

4.2 V8 Discussion

01, 2001, 2002, 42, a4, a6, allroad, audi, c5, check, code, engine, p0491, quattro, repair

01 A6 4.2 P0491 fault

acrscout on 09-30-2010

09-30-2010 02:39 PM
by acrscout

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0

1,939

A6 / S6 (C5 Platform) Discussion

2001, a6, audi, bulbs, cluster, d2, disabling, fehlercode, instrument, ist, lights, mil, p0491, panel, vag

Instrument cluster lights MIL randomly come on

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Multi-page thread

1 2)

Speedmart on 06-22-2010

07-13-2010 05:16 AM
by hockeypuck

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12

3,225

audi, code, p0491, s4

Transmission help please

chicago4.2 on 04-14-2010

04-16-2010 08:28 PM
by chicago4.2

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5

964

A6 / S6 (C5 Platform) Discussion

2001, 491, a4, a8, audi, code, p0491, po, rs6

2001 A6 4.2 -check engine

david@aladcoservices.com on 04-12-2010

04-12-2010 09:49 AM
by david@aladcoservices.com

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4

1,142

A6 / S6 (C5 Platform) Discussion

02, 2002, 27t, 42, a4, a6, a8, air, audi, code, codes, injection, p0491, p0492, secondary

Just got car back - Fixed P0491/P0492 - Odd.. more torque, better throttle response.

Slvrs6 on 06-15-2009

06-16-2009 08:15 AM
by Slvrs6

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2

15,207

A6 / S6 (C5 Platform) Discussion

04, 0bd2, 27t, a4, air, audi, check, code, engine, p0491, p0492, secondary, system, tt, v6

P0491, P0492 2ndary vacuum bank 1 and bank 2

tdhixon on 09-09-2008

11-13-2008 01:21 PM
by quickaudi:STFA

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3

2,644

2.7T V6 Discussion

2001, 2002, 2003, 28, a6, allroad, aud, audi, code, codes, obd, p0491, p0492, po491, quattro

Allroad threw P0491 and P0492 codes. Anyone have any experience with this

tdhixon on 09-09-2008

09-09-2008 01:57 PM
by Audiot

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2

5,698

2002, 2003, 491, a4, a6, allroad, audi, c5, code, codes, corvette, engine, p0491, po491, po492

Please help!!! I have MIL on with PO491 and PO 492. What are these

Robson0172 on 06-22-2008

06-22-2008 08:19 AM
by Robson0172

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4

5,297

A4 (B6 Platform) Discussion

03, 2002, a6, a8, air, audi, code, diagnostic, dtc, injection, mean, p0491, relay, secondary, trouble

GOT THE CODE! Any one know what that was???

mikebessxxx on 04-10-2008

04-10-2008 11:19 AM
by jazbo123

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3

5,438

A8 / S8 (D2 Platform) Discussion

0491, 2005, 27, a6, a8, audi, aui, code, codes, ecm, p0491, p0492

P 0491

tx170754 on 09-28-2006

10-03-2006 05:55 PM
by roughyear

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5

1,553

A8 / S8 (D2 Platform) Discussion

2001, 2004, 42, a6, air, airintakebank, audi, bank, code, engine, fix, intake, p0491, po491, secandary

P0491 Code: Secondary Air Intake (Bank 1) on '02 A6 4.2

jegilbert on 08-07-2006

08-07-2006 09:46 PM
by koz4.2

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6

2,799

A6 / S6 (C5 Platform) Discussion

2003, 2006, 27t, 71, 745i, a6, audi, bmw, code, lines, mgb, p0491, p0492, replace, rewire, vaccum, vacuum

Vacuum lines are a relative PITA... and... an a6 in the stable.

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Multi-page thread

1 2)

jsbautowholesale on 07-27-2006

07-29-2006 07:12 AM
by bac2h

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19

2,104

A6 / S6 (C5 Platform) Discussion

2002, 2004, 27, 30, a6, air, audi, camshaft, code, error, fixed, fuse, obdii, p0491, pump, s4, timing, variable

Two error codes at the same time?

karthick on 05-05-2005

07-06-2006 10:10 AM
by karthick

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7

6,876

A8 / S8 (D2 Platform) Discussion

p0491, rosstech

Need help with codes!

valentinl on 09-07-2005

09-07-2005 12:34 PM
by Uwe@Ross-Tech.com

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1

636

VAG-COM Discussion

2002, a4, audi, chamber, check, code, codes, ebox, engine, light, p0444, p0491, p0492, plenum, vag

Do I need a VAG-Com?

Andres G on 10-11-2004

10-12-2004 06:10 AM
by Andres G

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3

876

VAG-COM Discussion

2, 2001, 42, a6, air, audi, bank, check, engine, injection, light, p0491, p0492, quattro, secondary, system

Secondary Air System P0491 & P0492

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Multi-page thread

1 2)

DashingMax on 06-21-2004

06-22-2004 08:04 PM
by airmax617

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10

34,534

A6 / S6 (C5 Platform) Discussion

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