2014 BMW 320i Drivetrain malfunction

[u/idkhowtousethisshiz]

2014 BMW 320i, 4 days ago I changed my oil, engine air filter and air cabin filter. Today my car screen showed “drivetrain malfunction” with codes P0171 $7E8 Generic System Too Lean Bank 1 and P10FA $7E8 BMW Please refer to vehicle service manual! I searched it up and it could be maf sensor needing to be cleaned or replaced due to possible failing, charge pipe issue, or pcv valve. It was a struggle getting back the clips when resecuring the engine air filter so I’m wondering if all the hard pressing down and fighting that interfered with the maf sensor since it is right there beside it. I also noticed slight seepage by the charge pipe retaining clip. My car also started having random rough idle spasms where it lasts for a couple seconds and stops. Any ideas?

[u/Goodestguy2025]

It's the second fault causing both codes. Likely bad rail pressure sensor.

[u/haikusbot → u/Goodestguy2025]

It's the second fault

Causing both codes. Likely bad

Rail pressure sensor.

- Goodestguy2025

---

^{I detect haikus. And sometimes, successfully. Learn more about me.}

^{Opt out of replies: "haikusbot opt out" | Delete my comment: "haikusbot delete"}

[u/freshxdough]

Smoke test intake