2000 Dodge Caravan 3.0L with code P1787, the solenoid pack or possibly the TCM?

Question

I have a 2000 Dodge Caravan 3.0L with code P1787 reading. What would be the most likely trouble, the solenoid pack or possibly the TCM? The engine light goes away when I disconnect the battery for a few minutes but will come back on next time the trans shifts hard

Answer 1

P1787 OD hydraulic pressure switch circuit

Replacing the TCM will not fix this problem, unless the open circuit is in the TCM, The TCM test this solenoid with engine speed at 1000 RPM to identify that the switch is closed,OD solenoid is a normally closed , They only open when actvated.So a solenoid pack is a reasonable repair, as long as P1787 is the only code

Answer 2

P1787 Dodge Code - OD Hydraulic Pressure Test Failure
Read more: https://www.autocodes.com/p1787_dodge.html