What causes code p1740 in 2006 dodge ram 3500 4x4 diesel?

Code P1740 in a 2006 Dodge Ram 3500 4x4 diesel typically indicates an issue with the Torque Converter Clutch (TCC) operation. This can be caused by a faulty TCC solenoid, a malfunctioning transmission control module, or issues with the Transmission Fluid, such as low levels or contamination. Additionally, wiring problems or poor connections in the TCC circuit can also trigger this code. It’s advisable to perform a thorough diagnostic to pinpoint the exact cause.