New 02 sensor now this

I was driving along the motorway today in my my M235i, put my foot down a little, and then power suddenly dropped and it came up with drivetrain error, the car would not let me go past 60mph. I installed a new 02 sensor after getting error but now it has come back along with fuel pressure low issue. My question is how am I getting a 02 sensor rich error and a fuel pressure low error??

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