Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC C1688: VSM2 (MDPS) Signal Error: General Description
VSM is acronym for Vehicle Stability Management and is for provide optimized steering and braking distance by using HECU ECU and MDPS ECU signal when vehicle slip occurs. When vehicle slip occurs caused by low friction force on tire, HECU sends required steering torque to MDPS ECU via CAN communication line. MDPS ECU uses this signal to control motor to optimize steering control ability.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.