Check Engine Error code P0491

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May 10, 2007 | 09:11 PM

gordond

Thread Starter

1st Gear

Joined: 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?

May 10, 2007 | 09:54 PM

TKneedsS4

2nd Gear

Joined: Apr 2006

Posts: 1,312

From:

RE: Check Engine Error code P0491

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

May 11, 2007 | 05:08 PM

gordond

Thread Starter

1st Gear

Joined: Oct 2006

Posts: 12

RE: Check Engine Error code P0491

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

May 11, 2007 | 05:11 PM

techbod

Joined: Nov 2005

Posts: 12,826

From:

RE: Check Engine Error code P0491

secondary air system

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