3 Codes at the Same Time?

[Our03z4]

So tonight while parked and idling my 2008 z4 coupe 3.0si I had 3 codes pop up at the same time. P0597, P0172, and P0175 are the codes. Just a freak thing that the t-stat and maf go out at the same time or could it be something else? The car has 91k miles on it. I'm sure it's ready for both of those but want to make sure it doesn't need something more. It has had a slight rpm bounce at start up recently. Thanks for any help!

 

[ph001]

I suspect the P0597 refers to your internal heaters rather than the engine thermostat. First thing I would do is check the age of the battery - if it's original change it for a Varta E44 Silver. Then do a valvetronic adaptations reset (https://z4-forum.com/forum/viewtopic.php?f=3&t=113662&hilit=%23adaptation) for the bouncy idle. Clear all the codes and see what comes back.