What makes trans go into limp mode

What is your question?

My Ven goes into limp mode 4 or 5 times a week. I can turn off the motor for 3 or 4 min. and start it back up and it well do find for sometimes hours, sometimes just a little whiles. ???????????????????????????????? NO noises or leaks...

What makes this problem better or worse?

Turning the motor off and stating it back up....

How long has your 1993 Dodge Grand Caravan had this problem?

2 years