P1790 code on 2005 Chrysler Pacificaa 3 weeks after replacing trans I/O sensors.

Question

Problem fixed for 3 weeks. Tech replaced the "Computer" this time - and less than 4 miles later - original problem recurred. Had to take to dealer for diagnostics. Dealer re-installed original computer & codes now show: Solenoid pak and trans I/O sensors. No codes relating to malfunction of the "Computer".

Answer 1

The existence of DTC P1790 indicates mechanical or hydraulic (not electrical) related problems. It should be noted, however, that all mechanical problems don't necessarily result in DTC P1790. When this DTC exists, diagnosing the system should be based on the associated DTC and only mechanical causes should be considered.

P1790 Dodge Code - Fault Immediately After Shift
Read more: https://www.autocodes.com/p1790_dodge.html

Answer 2

P1790 Fault immediately after shift

This is a internal transmission failure,Replace the solenoid and ECM, Problem will still occur. Rebuilt or new does not matter this is a failed transmission.