Hello,
It sounds like you have a bad connection between the sensor and the PCM. To be sure here is a guide to help you check the wiring and the wiring diagrams for the transmission so you can see how it works and which wires to test:
https://www.2carpros.com/articles/how-to-check-wiring
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
Jun 24, 2019 at 2:30 PM