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Old 10-12-2011, 03:29 PM
manny187 manny187 is offline
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Location: vancouver
Join Date: Nov 2010
Posts: 46
Mein Auto: 2002 bmw 745i
I had the 2 codes p0491 and po492 and my car failed aircare (emissions testing), this is very common problem in the 7 series car. To fix this problems is very expensive...and even after you fix the problems the codes will pop up again. My dealer told me there is no point in fixing these problems as they do not have any affect on the performance of the car. So disabled the secondary air system for me at a cost of 500 dollars, been 2 weeks now and the codes have not come back on and the car passed aircare.
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