There is only one big plug connector at the bell housing end of the transmission. Nothing else. It’s a ZF5hp24.
I have a gut feeling that one of the internal solenoids has failed / stuck but could be wrong.
It was rebuilt 2 1/2 years ago with a 12 month/ 12,000 mile warranty and I’ve been in touch with the place that did it. He’s happy to run a diagnostic on it and go from there but I’m running out of time.. Flying out of London later this evening for 10 days.
Thinking of the warranty- I’m not sure I’ve even done 12k since rebuild. I must check. That would be a result.