CEL p0776 (need help) auto 2006 pre-runner v6

Hello everyone, I am losing my mind. I don't know which pressure control solenoid to buy. I am trying to find a clear answer, so I do not buy the wrong pressure control solenoid. The code p0776 is for pressure control sensor B and from my research I have found it also is called the (Shift Solenoid Valve SL2). I am preparing to change the trans oil, filter and the sensor if needed. My truck is not wanting to go into 5th gear at 70mph. I have looked on rockauto, oreillys, autozone, advanced, and ebay. When I look on these sites there is no indication of the sensor being the right part. Anyone have a link to purchase the pressure control sensor b?

 

The link below provides a lot of good information on the A750 series transmissions.

https://www.tacomaworld.com/threads...th-pics-for-second-gen-4-liter-trucks.289913/