Getting Problem On my Bmw 750Li Xdrive 2017 G12

[alexbmw22]

Hello

I am confused with my car. For long ago my car got all the time this 2 errors codes



1- 130708 VANOS outlet 2 control error. position not reached
2- 130704 VANOS outlet 2 control error . camshaft is stuck


After many test the mechanic-man has changed the whole Chain Set .

after starting the motor again and driving for a while I got this errors codes .

3- 118502 mixture control 2 mixture too rich large deviation

4- 118102 mixture control 2. mixture too rich

5- 168301 knock sensor signal engine noise above limit value

and the car smoke only on the left side . exhaust 2


every help will be welcome

thanks in advance