I have same problem and it's only illuminating when the engine isn't running.
Once i press the iginition button, the engine service soon sign is disappar like a miracle.
I've already asked same issue on this forum and every single members claimed that engine service soon light is pretty normal status.
Anyway, I've booked on next moday at nissan dealership, in order to check up everything for make sure everything is working alright, so i can tell you what's the truth by next week! Sound's good eh?