P0455 and P0741

[Carl_kps]

What could cause these codes (P0455 and P0741) to come up on my 2001 Disco 2? Are these codes related? Could it be serious?

 

[Carl_kps]

Looks like P0455 is just a loose gas cap. Still trying to find info on p0741.

 

[Undrtkr]

P0741-Torque Converter Clutch Solenoid Circuit Performance Or Stuck Off

you can look up codes here: http://www.iequus.com/obd_def.asp

 

[Carl_kps]

Does anyone know where the Torque Converter Clutch Circuit is located? Is it difficult to fix? I am tring to look it up.