At the end of the season prior to putting the camper away for winter I suddenly got a leak coming out of the rear of the TC. It was too cold to do anything about it so I drained everything and waited ...
So it’s low pressure, that’s good. And not the black tank, even better! Silicone repair wrap may work if you can get all the way around the pipe. Or can you cut out the bad connection with a wire saw and then replace ? Use a fernco coupler on one end or compression coupler?