Check the coils by disconnecting the wiring harness from them one at a time (and then reconnecting the one you disconnected before going on to the next one). If the idle doesn't change when you disconnect one of the coils you have found the problem.

What are the specific code descriptions you have for each code?

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Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual