2002 Eldorado

[madxmedic]

I recently bought a 2002 Eldorado. It came from Ga. with 67000 miles. The service engine soon light was on. I had it put on computer where a error code of P0741 ( Torque Converter Clutch Solenoid stuck off). It runs, sounds, and shifts without a problem. Are there things I could do to alleviate the problem? How do I get the light to go off? I also had a P0420(Catalytic System Low Efficiency- Bank 1) Is there anything that could be causing this? could it be sensors before and after CC? Thanks for reading