Evening all so we’ve just been away with our caravan for a week on returning home started the wife’s Octavia 1.2 TSI Estate only for it to throw up an error for the stop/start system plus it seemed to have a misfire which eventually cleared itself. 
Does anyone have an idea what could be wrong I’ve since turned off the stop/start in the menu on the info system. Many thanks 
Jim 

How old is the battery?

As @radders567 has mentioned, the battery might be getting on a bit now.  If that is still the original battery then that's really good, odds are you/someone else has already replaced it once since new roughly speaking.  The first cool nights have been arriving, and could have took the last legs out from under the battery (enough to warn about stop/start faults)  Try to get it tested to get a reading on the CCA value left in the battery.

 

You may wish to locate someone close by with VCDS or similar to get a code read (if stored) to try and locate which cylinder(s) may have flagged up a fault due to the misfire.  Could be a small break in a wire, that will get worse over time, in the early days it will be intermittant.  Might be an idea to unplug each electrical connector to each injector if you can and inspect the pins for any possible corrosion?

Thanks guys I’ll check out the battery as I said it stood for a week while we were in Devon on holiday so could be that I guess 👍🏻

4 minutes ago, Jim Day said:

Thanks guys I’ll check out the battery as I said it stood for a week while we were in Devon on holiday so could be that I guess 👍🏻

Yup, always start with the basic checks and work your way onto the more complicated stuff.

 

Check to see if you can locate someone close by, if you don't have any diagnostic equipment already.

https://www.briskoda.net/forums/topic/262215-list-of-vcds-owners-previously-known-as-vag-com-vcp-owners/

I have a mate with a SnapOn reader if one of those will do 

2 minutes ago, Jim Day said:

I have a mate with a SnapOn reader if one of those will do 

Give it a try, if updated it should be enough to get some results.