I'm not going to pretend that I'm an N62 expert, but a bunch of camshaft control codes would have me looking at the vanos solenoids next. Pull them out, run brake clean through them. See if you can cycle them. S50B32 and S62 solenoids can be cycled with a 9V battery. I don't know if that applies to the N62.

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2011 M3
2006 Sierra 2500HD 4WD LBZ/Allison
2004 X5 3.0i 6MT
1995 M3 S50B32
1990 325is
1989 M3 S54B32

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1989 325iX
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