i have a 2004 dodge ram with 5.7 hemi 2wd i am having problems with my transmission it is kicking itself out of overdrive so i scanned it and it showed 716 speed sensor 700 and 876 so i changed the fluids and both filters and the speed sensor it changed out as it should then after i drove it into town about 10 miles and stoped at a local parts store and had them scan it again the speed sensor code is gone i was there about 15 min when i left it started kicking out of od again i drove it about 15 miles and scanned again and it only threw up the 700 code i then drove it back to parts store and scanned again there it showed 700 and 876 could it be the trans fluid pressure sensor that is doing this

 

P0700 usually means it's time for a rebuild. You can try first to change the solenoid pack and see it if helps

 

The code is for the UD pressure sense switch that comes from the solenoid. There are 18 diagnostic steps for this code in the service manual and some of them require special tools.