So I have a couple codes but this is the one im having a hard time with...P0742 Torque Converter Clutch Circuit Stuck On? Ummmm what? I found a couple things talking about sensors and maybe changing trans oil/filter and a good flush but not sure. Please if anyone can help id appreciate any and all comments. Thanks.

Other codes I got..P0122 P0700 P1791 P1122...I changed the Throttle Position Sensor and thats as far as ive gotten. Thanks.