Chrysler Repair: limp mode chrysler concorde limited 2002, solenoid pack, chrysler concorde

Question
Hi Roland I have a chrysler concorde limited 2002, that always put in limp mode I have the code p1776 an p0871 after i turn off the engine is working good and later get stuck in limp mode again, I alredy change the valve body and solenoid pack but still have the same problem, I want to know what else can i try, coul you think that ecm is bad I do not what else try to do.
thanks

Answer
Hi Carlos,
The 0871 is about the OD pressure switch sense circuit and the 1776 is about the L/R solenoid being latched. Given what you have already done it, it may be something as simple as a defective transmission control relay, or more complex such as damage to the wiring harness between the tcm and transmission, or a bad tcm. I would take it in that order: exchange out the relay for another one with the same part number in the underhood box, verify no damage to the harness, then finally replace the tcm.
Roland