E270 Transmission problem 2003 / Help Please
 

Hello.
I have 2003 E class Auto Diesel Auto
I was driving 3 days ago and I feel the gear changing late in gear between 1-3.
I pull over and switch off the car and start again. I put the gear in D but not moving after I tried reveres and works.
Switch off and On again and this time reveres has problem and forward was ok
and same time engine light come ON
I parked the car front my house and in the morning I Call AA to drop the car to my friend 's Garage to Diagnostice.Diagnostice been Done and I had this 2 fault code.
1-
The speed comparison of Y3/6N2 to Y3/6N3 is implausible
2-
The gear is implausible or the transmission is slipping
Gearbox oil changed and still car not moving.
Still after switch off and on some time Car goes forward but reveres dose not and some time car goes reveres but not forward, and some time both dose not work.Please help me if you have idea about my car .
Thx to all