Is there any reason deleting the sound symposer as I did two years ago on my focus st could cause problems? My dealer wants to blame my code P2096 on the 2 year old delete. I have heard a thousand reasons for that code but never that one. They did $1800 work on my car and the code came right back so they decided to blame the sound symposer . Post catalyst fuel system to lean is the code reading . Sound symposer has nothing to do with that.