Using Veepeek OBDII Bluetooth adaptor with OBD fusion app to read codes. Codes found are P2621, P2620 and P14A7

I know my throttle body is bad should receive it in the mail anytime now to sort that out. P14A7 is my particule filter throwing an error code as my thermostat is stuck on the open position ( Engine temp wont go above 72 degree Celsius) I heard those two were related but still hesistant in changing the thermostat myself.

Other than that i cant see any other codes about ABS, TPMS, 4x4, PARK or parking brake

My battery is about a year and a half old (bought new from BMW) and seems healthy at 12.7 volts and 14.7 volts when the engine is running.

Thoughts?