Several codes diagnosis
 

Hi everyone, just picked up a code scanner after having an intermittent CEL.

Here are the codes that I pulled. I'm ignorant on these X5s so any help is greatly appreciated.

4D16 - scr system efficiency
4A63 - DDE: Glow plug cyl 1
474C - SCR system warning and deactivation scenario warning level 1
4B93 - DDE particulate filter system
4D03 - DDE exhaust back pressure sensor

Thanks