Unfortunately you have to go to a Triumph dealer as this is a software problem that needs to be reset via your diagnosic port,the only machine that will do this is a dealer machine or a mac tools ET80 eobd reader which costs about £79 but will read any other engine management problems that you will encounter which seem to come up if you do anything to a triumph,even if you change the battery, If you cant find a mac tools dealer in your area then contact [email protected]
Hope this helps