Check Engine Error code P0491

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05-10-2007, 09:11 PM

gordond

1st Gear

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Join Date: Oct 2006

Posts: 12

Check Engine Error code P0491

I had a friend check my 04 s4 and i have 2 error codes:
P0491
P0492
....Insufficient Air flow...or something like that.

What am I up against here?

05-10-2007, 09:54 PM

TKneedsS4

2nd Gear

Join Date: Apr 2006

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Posts: 1,312

RE: Check Engine Error code P0491

Ughhh i forgot i wanna say one is leaidng towards your MAF. but i forgot sdamnnnn

05-11-2007, 05:08 PM

gordond

1st Gear

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Join Date: Oct 2006

Posts: 12

RE: Check Engine Error code P0491

here is a sensible reponse
https://www.audiforums.com/m_503201/tm.htm

05-11-2007, 05:11 PM

techbod

Join Date: Nov 2005

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Posts: 12,826

RE: Check Engine Error code P0491

secondary air system

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