P1784 indicates a transmission mechainical failure, it must be diagnosed further to find out exactly the cause of the failure.
SOURCE: replacing front wheel hub assembly 1996 Dodge caravan
first jack up the van remove the wheel remove the brake caliper and rotor remove the axel nut then remove the three bolts on the back of the hub tap on the hub with a hammer it should come out hope this is helpful
SOURCE: 1996 dodge grand caravan
On a 1996, you will have to take it to a dealership. They will have to plug it into their DRB (handheld computer thingy) to turn it off.
SOURCE: Power windown on passenger side of my 1996 Dodge Caravan spot wo
FUSE BOX AT YOUR LEFT LEG UNDER THE STEERING WHEEL PULL PLASTIC COVER OFF NEXT TO THE HOOD LEVER
SOURCE: what do fault codes 12, 21, and 55 mean on a 1996
Code 12 = unplug battery recently (allways appear this code)
Code 21 = O2 sensor (the way to solve is replace it)
Code 55 = finish test
Good luck (remember comment and rated this post).
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