Beware of Code P0720
Subaru’s TG5D9 transmission utilizes four different speed sensors, two of which are inside the transmission and two are externally located. When a code P0720 for a front vehicle speed sensor is set, the most-forward external speed sensor is replaced – yet the code remains. The wiring is checked and the signal is checked and all looks fine. The TCM then gets replaced but P0720 remains.