What does a p1784 code on a 1997 chrlyster town and country van mean

The code is about the switch that monitors the hydraulic pressure for operating the low/reverse clutch of the transmission. That clutch is called into play for all forward gears as well as reverse, so it seems reasonable if that clutch were not working that the car wouldn't move in any gear. I would begin by making sure that there is sufficient trans fluid by inspecting its dipstick. If needed only use ATF +4 but don't overfill it. Also, just on a chance, take a look underneath to see if you see any motion of either the left or right half axles (or one moving, but one not) which would be another reason for no motion due to a drive shaft disconnection or some such anomaly. Other than that, your problem could be with the Low/Reverse solenoid switch in the solenoid pack portion of the transmission (the box on the driver's side of the trans) being stuck. That can be repaired without removing and rebuilding the transmission so let us hope that may be the cause. I would have the car towed to a good independent trans shop that has a reputation for knowing how to service the Chrysler electronic transmission

1784 refers to low range pressure sensor CIRCUIT problem (meaning the sensor is not working or is open or shorted, whatever signal was expected was unrecognizeable). This is a part of the solenoid pack if I remember right. Recommend you take it to someone who can check the electrical wiring and conenctors for the pack...if they are OK, most likely you would wanna change the whole pack as the components fail in bunches (other 1780 codes are looming if its a pack problem).

This wouldnt be what Id call driveway or back yard work, so unless you are skilled, have an experienced techncian diagnose the failure and change the part.

Why can't anyone just say what needs to be done...and how to diagnose it?

Hello! P1784 indicates a low reverse pressure switch. Could be caused by a faulty wire at the switch, valve body bolt might be loose, or solenoid switch valve might be stuck.


Hope this helps!