I think you mean p0715 and p0720. Go here and you canlook up any genric OBDII codes, which is what these are. Sounds like you might be headed to a repair shop for this one.

P0715 Input/Turbine Speed Sensor Circuit Malfunction
P0720 Output Speed Sensor Circuit Malfunction

http://www.obdii.com/codes.html

fasthair