Is there only one temp sensor for my gauge or is there another one somewhere. Change the one on the front of engine by valve cover and thermostat and needle still don’t move.
Another thing, did you use a Mopar replacement sensor? Aftermarket brand sensors (the one you get at your local auto part stores) are known to cause issues and not make the check engine light / codes go away.
For whatever reason or another, these things only like OE Mopar sensors. It's a well known fact unfortunately.