p0740 and p0785 volvo

Question

what is the codes p0740,p0785 volvo

Answer 1

p0740 - Torque Converter Clutch Malfunction (lock up slipping)

P0785 - Shift/Timing Solenoid Malfunction

have you replaced the transmission fluid in the last 30k miles? if not its a good idea to replace it (hopefully the transmission is not bad already) if the transmission is shifting hard the transmission is going to be bad.