Code 740 on 1997 Dodge Caravan

My check engine light came on and it coded 740. Is this a serious problem. Do I need another transmission. Please advise.
????

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
We would really need to run some tests to give you an accurate answer if you need a transmission.