Thanks Weasel, I will check the hoses first thing tomorrow but, doesn't the sensor measure the amount of air before it gets to these hoses?

RealOEM.com * BMW E53 X5 3.0i EMISSION CONTROL-AIR PUMP

everytime I have this fault and change item #9 on the picture, the fault goes away for a couple of months, 10-12.

__________________
2010 X6 50i
2005 X5 3.Oi, Many Options
2015 HONDA CR-V EX-L
1998 ACURA 2.5TL

MODs
- Driver's outside mirror light
- Voice Recognition Module
- Blaupunkt Entertainment System
with Digital TV