First, clean all the sensors. Dirt on them can cause this.

Then, check all the connections. You can unplug them, and plug them back in, at each sensor. This is the most likely cause, but clean them first because that is easiest.

If those steps don't change it, then you may need a replacement sensor.

Also, it helps if you fill in your location, and the year of the X5. We would know if it is under warranty, for example. I suspect it isn't.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue