C0668

Symptoms

• ABS or ESP indicator is on
• Incorrect operation of the ABS system
• Disabling the ESP system
• Inability to activate cruise control

Causes

• Malfunction of the right rear wheel speed sensor
• Broken or damaged wiring harness
• Poor contact in the sensor connector
• Contamination or damage to the gear rotor
• Malfunction of the ABS/ESP control unit

How to Fix

1. Check the integrity of the sensor wiring harness
2. Inspect the sensor connector for corrosion or damage.
3. Check the resistance of the wheel speed sensor
4. Clean or replace the gear rotor
5. If necessary, replace the wheel speed sensor
6. Check the operation of the ABS/ESP control unit

Related codes

Error C0668 by Vehicle Brand