Coil light in 2.2D

Hi folks

Am driving a 2.2D auto 08 facelift model, done 195000 miles.

had to make a long drive to and from Cornwall a couple of weeks back and on the return home after about 200 miles straight nearly home and the amber coil light came on with gearbox fault indicated. Car would still change gear (auto) but the turbo wasn’t working, was very sluggish indeed. Pulled into a petrol station switched off held my breath and counted to ten and then switched back on - absolutely fine… have driven it 2 weeks since with no issue at all - if I had to swear to it perhaps the engine is a bit ‘breathy’ at lower speeds 20-40 mph especially while accelerating, but once I get to 60mph+ it’s smooth as ever. 

i had a turbo replacement at around 160000 miles so that’s presumably not the issue. 

only other issue recently was an abs sensor fault which was fixed in half an hour, just an electrical connection. Might be connected though I suppose…?

obviously it’s an old car and done some serious miles but once you’re on cruise it’s lovely. I love driving it just don’t want it to be a sign of anything serious or potential major failure.

grateful for any thoughts. cheers all.