car starts and drives ok, but the service is light on dash its the word and not the service light as in due for one. this light is on the rev counter side. When the code is cleared it will start and no light will be on the 15 secs later light comes on and on the info system says engine fault. Code read the engine and comes back with this code U1134. Also the stop start button does not respond it is light and when pressed will flash and not go out but will stay on. Would like to know what the code means to start with thanks steve

U1134 is a LIN or data-bus fault. I have no other information for it. However a quick bit of digging and there may be a controller (voltage retention device) under the n/s/f wing which is prone to damage/water ingress (especially after pothole excursions).
Might be worth a look?

Tony

Update fix
Tony thanks for info, found the capacitor under the nearside wheel arch liner, no damage from anything. I had left the battery off all last night and came to car this morning did a check of all the wiring and connections with ref to unit and the stop start, pulled and pushed all wires didnt find anything much. Put it all back and connected battery and on start up all ok, retested a number of times and still ok took it for a run and still ok a bit of a puzzle