Probable Causes

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Transaxle assembly powertrain parts failure
When the DTC P0715: Input shaft speed sensor system is stored
When the DTC P0720: Output shaft speed sensor system is stored
When the DTC P0962, P0963: Line pressure linear solenoid valve system is stored
When the DTC P0973, P0974: Low clutch linear solenoid valve system is stored
When the DTC P0976, P0977: 2-6 brake linear solenoid valve system is stored
When the DTC P0979, P0980: 3-5 reverse clutch linear solenoid valve system is stored
When the DTC P0982, P0983: High clutch linear solenoid valve system is stored
When the DTC P0998, P0999: Low clutch shift solenoid valve system is stored
Malfunction of the low clutch, 2-6 brake, 3-5 reverse clutch, high clutch
Malfunction of the valve body assembly