Hi, long story short, cam sensor error code,and torque converter clutch stuck off error code

, told to change cam sensor as this may be throwing up gear box code, fitted new genuine cam sensor, no joy still getting torque converter error code

, and car going into limp mode

, car is scrap value against another car part x at car sales places, so do I get hold of a auto box and fit, take the scrap value and trade it in, or bite the bullet altogether and scrap the car altogether

, I think there is more to just changing the auto box as in, the ecu will not recognise the different box, any help and advice what to do here would be great