Exhaust gas scandal recall action 23Q2

Hello, A query of the recall actions for my Touran 1T3 motor CFJA just brought the following result: “30.09.15 23Q2 S-Servicemeasure Diesel Exhaust EA189” I’m curious what this measure does with my car!? Without knowing in advance what is done (loss of power, extra consumption etc.) I will not make my car a friendly one at any rate or I will keep the status quo in advance, e.g. by means of a dynamometer. I have fuel consumption of the last years anyway by fuel monitor.