Code 740 relati g to transmission clutch malfunction

What is your question?

I bought a 2003 Acura TL car one month ago. It showed error code 740. I change trans fluid once and run good except when speed up to 60 m the error code showed again.

What makes this problem better or worse?

Speed over 60 m engine light on show code 740

How long has your 2003 Acura TL had this problem?

About one month