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S Car Model Line Audi S4, Audi S6, and Audi S8..Audi's track-ready touch on each of the popular sedans

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Old 05-10-2007, 09:11 PM
1st Gear
Join Date: Oct 2006
Posts: 12
Default Check Engine Error code P0491

I had a friend check my 04 s4 and i have 2 error codes:
....Insufficient Air flow...or something like that.

What am I up against here?
Old 05-10-2007, 09:54 PM
2nd Gear
Join Date: Apr 2006
Posts: 1,312
Send a message via AIM to TKneedsS4
Default RE: Check Engine Error code P0491

Ughhh i forgot i wanna say one is leaidng towards your MAF. but i forgot sdamnnnn
The AF Iceman. & Car Electric Specialist. ask about me
02 S4 w/goodies

Future AKA Rally Participant
Old 05-11-2007, 05:08 PM
1st Gear
Join Date: Oct 2006
Posts: 12
Default RE: Check Engine Error code P0491

here is a sensible reponse
Old 05-11-2007, 05:11 PM
Join Date: Nov 2005
Posts: 12,826
Default RE: Check Engine Error code P0491

secondary air system
Old 05-11-2007, 05:11 PM

a4, a6, air, audi, check, code, codes, engine, error, mean, obd, p0491, p0492, secondary, system

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