hey my 4 cylinder honda accord is throwing the code p0740 for tcc malfunction. I have searched a bit but havent found the exact answer i was looking for and was hoping to get some help from ht members. Well basically how bad is it to drive on it for a very long time or is it a serious problem i must get taken car of in the coming months. also what causes it and why?i understand it has to do something with the tranny not locking up.

thank you
harry