Fault code 16804 - Catalyst System

[acano]

Ok so i keep getting this fault code thrown up, not really sure why, but I took my car into audi again, to get it checked. Came back that the cat is fine no holes (none they can see anyway) and they said that the sensors were fine, but on the same breath said I should maybe change the sensors to see if that will sort the problem.
seems a bit strange considering they said all was fine!

so anyway done a bit of a search and found this was wondering if anyone had used one before or even thought it might work?
any thoughts?

Tony

[bondo]

Hello buddie, just read your post and it seems that you experienced the same problem i am experiencing now, but my fault code isnt the same as yours its 16805. Mechanic explained that its either the sensors either side of the CAT or the CAT itself and recommends a process of elimination starting with the sensors and the CAT last! Did you get your problem fixed?

thanks!!

[Crasher]

Which engine code and year?

[acano]

Hi, no I'm still resetting the light every couple of weeks! so far i have replaced both sensors and the cat all audi parts still the same problem so i hope you have more luck than me.
Few weeks ago I changed fuel to V-Power and it hasn't came back on, now 3 weeks so fingers crossed, only wish i had tryed this first but it has been an expensive lesson