Audi=No fault code, no idea
Its like most of these cleaners these days...They make them so safe they dont work anymore. I remember when carb cleaner would just melt petrol varnish...now its totally useless but if you drink it by mistake you will be fine .........I think thats the thinking...lol
Try redex or some kind of de coke mix but dont push the flap open !! its connected to a tiny stepper motor and you will wreck it if you force it..
Ibis white Revo S3 and now matching Vivaro LWB HR 2900 :-)
Many people are alive because its illegal to shoot them.