I have a 1999 Dodge Ram 318 with 110k miles on it. Yesterday my check engine light came on. As I was driving to the auto zone I noticed a difference in the 4 speed automatic trans. It seemed to have trouble shifting from 1st to
2nd. It stayed in 1st gear longer. The tech at Auto Zone read the Codes and came up with error code P0720. The definition was A low speed sensor speed above 15 mph. Explanation was Vehicle speed above 15 mph while transmission output shaft speed below 60 mph. Probable cause- Failed output shaft speed sensor
- Electrical problem.
Where is the speed sensor? I sure hope it is on the outside of the trans. Any help on this? Thanks