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OBD II code P1784

I have a 1996 Dodge Grand Caravan with a 3.3 and 4 speed auto. I get a P1784 code from my code reader.

I’ve had it kick into limp-home mode on moderately long trips. I think I’ve corrected the leakage that might have existed. P1784 isn’t in the book.

Is there a TSB? What’s this code??? Low Trans Fluid??

I did find fluid on top of the case, behind the crank position sensor once but found no source. Hasn’t happened again but still goes into Limp-Home mode sometimes.

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