Good Brothers have a problem with my transmission ... now.... no hand held ODB was able to connect to the TCU..... I manually checked the problem by using the power light flashes to determine the trouble code... the code responded was the line pressure duty solenoid... i replaced that solenoid and the same problem arised . i maunally reset the tcu and ECU via battery pole etc...... the same code keep repeating saying it is line pressure duty solenoid. yes the transmission is in field safe mode. now if i start the car... while tumbling just before the engine starts i put it in reverse and the light stabilizes and its out of field safe mode. if i switch off and start back its good... but if i leave it off over 5 mins .. start back the power light continues to flash and transmission is in field safe mode.... what do you professionals think is the problem?