I installed shift solenoid pack put it back together and put the same fluid. Test run. then put back on OBD P1781 was the result.
Oct 14, 2022 at 4:15 PM
Transmission codes P1781 and p1784?
1999 CHRYSLER 300M
SACFOX189
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Hi,
The code is specific to the OD pressure switch sensor circuit. What that means is the pressure switch is open or closed at the wrong time in a given gear or shift.
There are multiple things that can cause this code to set (see the last pic below). Most commonly, it is the pressure switch itself. However, the only way to confirm is to perform the diagnostics related to the code.
I attached the diagnostics below for your review. Take a look through them and let me know if it is something you feel comfortable doing.
Take care
Joe
See pics below.
The code is specific to the OD pressure switch sensor circuit. What that means is the pressure switch is open or closed at the wrong time in a given gear or shift.
There are multiple things that can cause this code to set (see the last pic below). Most commonly, it is the pressure switch itself. However, the only way to confirm is to perform the diagnostics related to the code.
I attached the diagnostics below for your review. Take a look through them and let me know if it is something you feel comfortable doing.
Take care
Joe
See pics below.
Images (Click to enlarge)
Oct 16, 2022 at 9:08 PM
So just replace valve body and it should solve it because I don't know where anything located on transmission.
Oct 17, 2022 at 8:53 AM
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