CEL: "P0411 - Secondary Air Injection system incorrect flow detected"
08-17-2006, 06:31 PM
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CEL: "P0411 - Secondary Air Injection system incorrect flow detected"
I used a coworkers' OBDII to pull/clear this code, but didn't really know what it meant. My guess would be the O2 sensor?? Secondary Air pump? I cleared the codes, and I drove the car about 20miles and the CEL hasn't reappeared yet....
08-17-2006, 06:35 PM
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I STFA and came up w/ Nate's response to it...
but seems like many ppl have come up w/ different fixes. I guess it'll be back to the drawing board.<ul><li><a href="https://forums.audiworld.com/a4/msgs/2559084.phtml">https://forums.audiworld.com/a4/msgs/2559084.phtml</a</li></ul>
08-17-2006, 06:50 PM
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ok I think I've got it....for those of you who have or have had the same issue.
<ul><li><a href="https://forums.audiworld.com/a4/msgs/2436218.phtml">https://forums.audiworld.com/a4/msgs/2436218.phtml</a</li></ul>
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08-17-2006, 07:09 PM
#8
Absolutely. All those stupid vac hoses die b about 70k...
I'm assuming you've already replaced the one that goes from the radiator side of the intake manifold to the N249 valve? And the one that goes to the FPR? If not, replace those too. Also check the one that goes down to the DV, especially where it routes over the alternator, they can get chewed up there.