2006 E53 4.8is Self Leveling Suspension issues and codes

[cmbenedict]

Thanks to all. Could the problem be temperature related? I was able to get the X5 to lift and lower using the Foxwell. Cleared the codes and stayed clear for a few days until the ambient temperatures dropped below freezing again overnight. Code came back next morning.

Could there be water in the expansion tank or in a valve somewhere that is freezing and causing the fault? Cleared it again and been fine as temps above freezing. Strange but thought I'd ask.

Thanks in advance.