Have Transmission Questions? Ask a Mechanic for Answers ASAP
Since there are no codes, this means it is not an electrical issue to blame. I assume you have verified there are no trans warning lights on and no codes stored. That means it is an internal issue with the transaxle associated with the valve body or the intermediate clutch. You mentioned wanting to replace the OSS sensor, I assume the speedometer does not work since your wanting to replace it. It is on the top of the transaxle, above where the passenger axle shaft connects.
You want a excellent 5 star answer & I would like to be rated the same for providing it. Consider I don't know your skill level & I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies. Try your best to respond with good detail so I can do the same. I normally log in at 3pm and work late. A rating is required. Your rating me, what I type. I am not an employee of this website, nor have control over the fees or the time it took to get a response. If you rate negative or not at all you still paid, but I get nothing. I want you pleased with me and my efforts, so let me know if your experience here has come up short.
It would not start in most cases if the TR sensor were bad. Below is an image of the OSS.