C1751 — Vehicle Speed Sensor # 1 Output Circuit Short to Vbatt
What it means
C1751 is an OBD-II diagnostic trouble code: Vehicle Speed Sensor # 1 Output Circuit Short to Vbatt.
Typical fix
Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.