F150SANC

Good afternoon all!
Actually a long time member but couldn't for the life of me remember my old credentials nor do I have the same email. Since my 04 isnt my daily anymore, im not here as often. In any case, Im hoping you guys could give me some recomendations. My truck one day why driving basically went limp. Started running rough, shuddering, and stalled out at a stop. I can smell gas from the exaust. I plugged in my odb scanner and could only get p2196. I tried to connect today and use Forscan but Im new to this software and not sure what im Looking at. Any input or tips to troubleshoot are appreciated. I changed the upstream o2 passenger side but still get the error. It was a bosh if that matter. I got about 130k on the ol girl so I hope to have her for at least that many more. Please help me get her on the road again guys. Thanks!