I had code p0715, After reading all over i changed the electrics (trans plate) my 13 pin connector was leaking, car in limp mode. Now i have the same code. I had the battery disconnected all day. Do I need the etc reset or should it reset itself. It is still in limp mode with the same p0715 code. Is there something I could have done wrong or not done to cause this? The repair was pretty straight forward.

1999 E320 4-matic