U0402 Refers to a implausible gear or PRNDL data from TCM
Only possibility at the moment appears to be wrong o'ring choice for TCC solenoid.
The workshop manual recommends after any transmission modifications
'Perform the TCM adaptation procedure'
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/
TRANSMISSION CONTROL MODULE - STANDARD PROCEDURE)
Stuffed if I can find it in my pdf version (WK 2005-2008 Service Manual)
Any help appreciated
Reading about the Chrysler Module for Auto Enginuity software
'Clear Learned Variable Line Pressure Counters'
Thinking these two procedures would be the same?