u/Big_Sale7840

hey everyone. i’ve got a very low mile 528i. 40k miles on it. miles of service records . recently i’ve gotten these two codes and have noticed a notable loss of power. it has a louder tick sometimes when idling someone leading me to believe it’s dirty or damaged vanos as it did stall on me two times yesterday after some light revs. was also thinking maybe alternator as it’s never been replaced. any suggestions or info would be wonderful!