You first need to have your electrical system on your transmission solenoid packs checked out to be diagnosed properly. It may be an electrical issue, or a bad solenoid pack on the transmission.
I Have a Dodge Caravan 1996 , and the Light ABS go on all the time finally I find out the fuse in the box under the hood at number 1 from left to right had broken
Duct tape
1998 Dodge Caravan Speedometer Has a second connector attached with a white pigtail. What is that used for and will it operate without it?
Usually you replace the egr valve.
There's a TSB on this problem.
You need to BClear. What is wrong with it?
Replace the cam sensor
Have you tried wire woolling the termials and the flex connectors - 80% of all reverse light failures are due to bad connection - rust, damp, dirt are all the bain of caravaning.
Fix the cause, or keep adding fluid.
Go to a Car Repair Shop
you fix whatever is making it come on :-)
There is no repair procedure, it is a replacement only item.