Topic: Pulled Strange Code today P2261?

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P0101 means the indicated airflow was zero. I think there were some ideas in this website about how to clean up the sensor without destroying it, read carefully and proceed with even more care.

P2237 means the pumping circuit for HO2S #1 is open, has high resistance or it has a short to B+. Check the White and light Green wires between sensor and ECM. Connections or under hood wiring oops could be at fault or maybe even the sensor.

All three of the DTCs seem to be unrelated, that is, no silver 45ACP one hit fix is likely to help. Of course a fully functional scan tool will help a lot with these.  Visiting a dealer is one way, or make friends with a dealer tech. You'd be surprised how much they know! They even have their own forums for when they are stuck or just want to share.