I have regular issues with the "Yellow Wngine Light"
The MIL Light has come on and is staying on: it was coming on and flickering on/off until the car was hot.
4 Errors, but really 2 pairs...
The Codes are:
P0150 $07E8 02 Sensor Circuit Bank 2, Sensor 1
P2247 $07E8 02 Sensor Reference Voltage Circuit Open Bank 2 Sensor 1
From looking at BMW forums it seems this isn't exactly uncommon and Sensor 1 is the pre-cat sensor, not sure if Bank 1 is left side or right side...
I posted recently: some good answers,
here particularly from "Spanner Juggler"