i pulled onto the freeway yesterday and i got into the car really hard and the cel came on. went to autozone today and pulled these two codes. P0720 and P1574. whats the usual fix for these codes. thanks.

 

P0720 is vehicle speed sensor code.
1. check harness.
2. replace revolutionary sensor.

Looks like p1572 also refers to the vehicle speed sensor controls, so i'd say you need to replace the revolutionary sensor, reset the ecu and you should be all set.

 

The P0720 thrown is for a speed sensor or what others call the "revolution sensor" it's actually a sensor located on the low in the drivers side on the tranny