2002 Sport Trans Problem

I seem to lost 1st gear. No codes at all. I can pull out in 2nd and then shift to drive. It seems to me that it is shifting from 2nd to 4th trhen fifth.I can not start in drive or low. Help. I am lost thought it would show some kind of solenoid code.
Thnaks,
Jeff

are you getting torque converter lockup?what does you fluid smell like,look like?Have you dropped the pan for a look?does it seem to "slip" when shifting?just food for thought.