2008 Prius Code Help

Code # Status Message
B1421 Current Solar Sensor circuit (passenger side)
of rearspeed sensor rh
C1278 Current Abnormal change in output signal of rear speed sensor lh
C1281 Current Master cylinder pressure sensor output singnal is faulty
C1343 Current Hydraulic System (rr)
C1346 Current Stroke sensor zero point learning
sensor lh
C1275 Current Abnormal change in output signal of front speed sensor rh
C1276 Current Abnormal change in output signal of front speed sensor lh
C1277 Current Abnormal change in output signal of rear speed sensor rh
C1278 Current
C1272 Current Low output signal of front speed sensor lh
C1273 Current Low output signal of rear speed sensor rh
C1274 Current Low output signal of rear speed sensor lh
P0A93 Current Inverter cooling system performance
P0A93 Current Inverter cooling system performance
P1121 Current Throttle/pedal position sensor/coolant flow control valve
position sensor circuit stuck
P1121 History Throttle/pedal position sensor/coolant flow control valve
position sensor circuit stuck

 

the 3 way coolant valve was the first code to pop up, check engine light 2 days after I purchased the car, it turns on for 1/2 day to two days, then no check engine for a couple days. Brake and ABS lights were on when I bought the car. 88k miles Florida car. Red triangle of death cam on 2 times, both times after about 30 minutes in drive on the freeway, 1st time it was gone the next morning, second time went off after a couple stops within about 4 hours. No I was not driving that whole time 3 short drives then stopped at each for about an hour.
Car runs great, brakes fine, no problems other than irritating lights.
I’m guessing an inverter pump on the red triangle of death and a connection issue on the sensors. Been looking for a techstream download and cable, just can’t figure out which version will work on my old xp laptop
which cable too.

 

I bought an OEM valve for the repair, getting smoked headlights, when I do them will do the valve at the same time.