The engine light came on my Nissan Sentra 2008 and took it to autozone and the speed sensor fluid pressure senor a and b came on I would like to know if the valve body is bad?

The engine light and the codes for the speed sensor and fluid pressure sensors indicate issues with the transmission system, but they don't necessarily mean the valve body is bad. It’s possible that the problem could stem from faulty sensors, wiring issues, or low Transmission Fluid. To accurately diagnose the issue, further inspection and testing of the transmission components are recommended. If the problem persists, consulting a qualified mechanic would be the best course of action.