BMW X5 E70 4.8 - Rough Idle and Misfire at cylinder 8

[xTrEeMx]

Hi there guys, i have an issue with a X5 2007 4.8i.

Before changing the chains, oil pump and everything on the engine.. there was a missfire at cylinder 1. (This was before a year ago). After changing everything, car was working fine, until started saving misfire at cylinder 8 with errors:
These two comes together
2E2B
2D32

And sometimes with 55C3 - which i consider is the lack of the engine power.

After driving it for like a week or more.. but sometimes it could occur day after day... gives these errors: Spontaneously.. i've reset the adaptations of the throttle body.. also the body is clean. Coils, Spark plugs are good.
2CF0
2CF1
2CF9
2CFA
2CF8
2D00
2D13

I am thinking about the harness that goes to the throttle body. I saw that it is an issue on these cars.. With INPA it shows when saving the errors that:
Voltage throttle valve potentiometer 1 - 0.86V
Voltage throttle valve potentiometer 2 - 4.20V

Is this okay or it means i am correct about the harness ?

With all these error car has rough idle.

After cleaning the codes.. car works just fine with no symptoms of any issue.