Fuel quality inadequate seat leon 2012 mk2

[ray-afz]

Hi, i have a Seat leon 1.2 tsi 2012 mk2 and i noticed sluggishness and revs at 1k idle. I got a tech to plug in VCDS and a 20045 fault code appeared that said fuel quality inadequate. I filled up with shell vpower and the car was as good as new instantly. But after 2 days its happened again. 1k revs and sluggishness. Ive been told to fill up with vpower again. But I just want to know if anyone knows about this issue and how to fix as its annoying me when driving up steep hills or need for more power.