I just looked through each code. I suspect the P0740 is the result of the P0730. What I read indicates there could be either a line pressure issue or a shift solenoid issue. Interestingly, it doesn't mention anything about this, only happening when the vehicle is warm.
I am going to provide the test information below. However, it will require a scan tool that can communicate with the system.
I do have a question. I realize this may sound basic, but is the fluid clean and full? If the fluid is excessively low, you can lose pressure.
Let me know. Also, let me know if you have other questions.
See pics below.
Images (Click to enlarge)
Saturday, August 6th, 2022 AT 8:22 PM