Help with codes

[Mrbeef612]

I have been what I thought to have was transmission problems in my 2003 325XI

I went and had my codes read:

Trans:
151 "CAN" Break signal

Engine:
39 Brake light switch
120 Petal ( Travel vs. Brake Signal)

ABS:
116 Brake Light Switch
90- Intermittent system down

So I have done some looking around and I think most of this stems from my brake switch. I just do not know about the transmission code and the ABS codes. And this is not constant it comes and goes. The last time it happened was about 2 months ago. When I turn off the car and turn it back on there is no CEL or Yellow transmission light.

Thanks!!

[Mrbeef612]

So to clarify it has happened once 2 months ago. And just happened again last week. Anyone have a idea?