Isn't code S89 service due and code 89 (not in the manual) a general engine fault?
Giving an idea of where you are and what actual car you have might help. Although apart from location as very few of us I’ve seen have the kit without full diagnostic data your going upstream in a boat without paddlesHi, I have been having a similar issue with my Mokka. I have had error code 89 appear - it has happened almost half a dozen times in the past few months and every time i get a loss of power and not able to accelerate over 40 mph. The issue fixes itself if you pull over and switch the engine off for a few minutes.
I have taken it into the garage twice re this problem, they tried changing the fuel filter in case there was a blockage and they have also done a 'flush' of the system. The problem remains unsolved as it still happens from time to time.
I would be happy to hear any solutions that others may have found!
Please note that this is different from the S89 code that appears in relation to a service.