Codes P0125 and P1135

I've encountered p0125 lots, typical thermostat code.

Installed new, code returned, always with p1135 (bank 1 sensor 1)

Installed new engine coolant temperature sensor, reads proper now. Bled coolant

Same codes. :(

Fans were not kicking on, fan sensor faulty (related? I don't know)

Read the TSB about the A/F heater circuit loose connections. Open both the little fuse box and the long one on the driver's inner fender. Fuse and pins missing on both! No relay, no fuse, no connections.

I have a b1s1 coming, but this is very weird.

Every video and tech tip I have read ends at the things I have done and ends at the heater circuit.

Anyone?