on my way home from the Audi parts dept in Mt.Vernon the CEL came on. was really mad because i had just changed my oil about an hour before that. I went to JRtrainers shop ,VW City, here in the bx to check what it was. the guy there checked and it came back as "16805 UNKNOWN"!!!! anyone know what it is? and then we turned the car off and on again and the CEL dissappeared.

I was at the Audi parts dept to get some power steering fluid, added it before i left the parts dept. an hour before my oil was changed using Mobil 1 synthetic oil

 

its a bogus code and means nothing so reset the system

 

reset the system by disconnecting the battery terminals for a few minutes?