T700 A Few Sensor Issues

2011 T700 w/ Paccar MX 13

P102A = Temperature after BPV - Voltage too high or short circuit to supply on ECU (D420) pin (C11)

Not sure about this one? When is this temp sensor located?

P0107 = Boost pressure sensor F802 - ECU pin A51 signal voltage too low

Thinking bad wiring on sensor here or bad sensor, should be an fix. Can I clean this sensor since it gets soot on it?

P3841 = Air shutoff valve - Stuck in closed position

This one is related to this:
Air Shutoff Valve Short To Ground Or Open Circuit On ECU Pin A32
Possible causes:
1) The air shutoff valve fails to open.

I am thinking it is the valve with the banjo bolt, is that correct?

I have this project on deck for tomorrow. Any help or suggestions would be greatly appreciated.