[Nurf]

Hey Guys,
I was hoping I could get some help diagnosing my Codes and where to begin as I plan to attempt to DIY these repairs.


On my '11 328xi with 105k I've started with a RPM stutter a week or so ago where RPMs at an Idle would drop ~100

Then under load during hard acceleration getting up to speed on ramps my SES light came on. Pulled over and engine was misfiring, shut off car SES went off car back to normal.

2 Days Later Started car In the morning before work and SES stayed illuminated. Had Codes scanned and got the following

P0015
P0548
P0302

I changed my Plugs at around 65k along with coil packs so I may be due to change those as well.
My question is with these codes how should I go about fixing this before I start ordering parts.

Thank you for your help.