I get a code p0741 on my 2001 toyota corolla

Question

what is the cause and how to fix it

Answer 1

P0741 Torque convertor clutch solenoid performance (Shift solenoid SL)

The procedure is to remove the valve body, depending on the transmission fluid condition, if it burnt which is dark reddish blackish, it may be adviseable  the transmission to be rebuilt.