Im using a flimsy little bluetooth reader until I get my diagnostic laptop up and running again

Anyway plugged it in today and had one error there is no eml lit up on the dash and the cars driving fine which doesn't coincide with the symptoms that generally come with this fault

All details of it are here http://engine-codes.com/p0369_bmw.html

would you recommend changing it ? Its giving no issues yet but maybe its likely to go soon