ram transmission codes

[flyinlow]

 My 2004 ram 4x4 hemi , 130k. miles   Occasionally slow to engage drive after back up. 3-4 seconds  It has been this way for years.

Recently got a check engine , 

PO 700   Trans control system

                              PO 731  Gear 1 in correct ratio

                              Po 876 Fluid pressure sensor switch D Range/performance



Any Ideas? I erased the codes and will drive some more.

[Kern Dog]

Last month my 265,000 mile 2wd Ram 1500 lost 1st, 4th and 5th. It still had 2nd, 3rd and reverse. It displayed a code but I don't recall the number. I had to pull the trans pan and valve body then replace the solenoid pack. All is well again.