Either the solenoid pack or most likely the torque converter itself.
If the car has an automatic transmission, then it might have lock up torque converter. If the torque converter is engaged while the engine is at idle, then the engine will stall. Bring the vehicle to reputable transmission repair facility and have the replace the torque converter clutch solenoid.
Its the code for the torque converter clutch solenoid.
torque converter clutch solenoid circuit
Torque converter clutch or overdrive solenoid malfunction.
The torque converter is between the engine and transmission.The torque converter is between the engine and transmission.
Tcc or od solenoid performance. It is caused by a slip in either torque converter lock up or in overdrive. usually the torque converter has failed.
The lock up clutch is inside the torque converter. The solenoid is on the valve body in the transmission. The wiring runs from the engine computer to the transmission.
PO740 is a Chrysler specific code that involves your Torque Converter Clutch Circuit The problem could be in the TCC solenoid, or the torque converter itself.
Code 37 is for a malfunction in the torque converter clutch circuit.
9.1 quarts including the torque converter
Idling too low or a bad lock-up torque converter solenoid.
P0743-TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUITS This code will set if the voltage detected on the Torque Converter Clutch Solenoid Control circuit at the PCM is different than the expected voltage.