DTC C1688-08: VSM2 (MDPS) Signal Error: General Description
WARNING: This page is about a different car, the 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle Stability Management (VSM) is a function to maintain optimum steering stability and braking distance while a vehicle slips. When the vehicle slips, the ESC (ESP) sends required torque value to EPS (MDPS) ECU via the CAN line. After receiving the torque value, the EPS (MDPS) ECU performs steering control.