Code p1132 after changing out the transmission

Question

We got this p1132 code when the check engine light came on after we changed out the tranny in our 2000 ford expedition eddie bauer. The vehicle goes into gear, but when the engine warms up, it will not go like its supposed to. And we also found a hummimg noise last night coming from under the engine

Answer 1

P1132 H02S bank 1 sensor 1 not switching , fuel trim rich mixure.

System running rich, All the 02 sensor wiring hook up? No vacuum hose got disconnected? Also check the engine oil level. Also double check the 02 sensor connection making sure bank 1 and bank 2 are not cross connected some model when removing and installing the transmission can get mixed up.