97 stratus 2.5 no 3rd p700,720,733

Hey guys !! I got a 97 stratus 2.5 (and it will be my last) Yesterday I was driving and lost 3rd gear. Now it won't get past second. I did fluid and filter 2 months ago with the right fluid but now something is wrong. I don't have a great scan tool but I am getting code 700-trans control system malfunction 720-output speed sensor circuit malfunction and 733-gear 3 incorrect ratio. The fluid doesn't smell burnt and is still like new. Any ideas given this information? I haven't been into one of these particular trans yet. so I'm hoping one of you have had this same problem and can say change soloniod pack or it's probably this. or it's junk any info would be great.