C0668
Right Rear Wheel Speed Sensor B Circuit Low
C0668 is an OBD-II diagnostic trouble code meaning: Right Rear Wheel Speed Sensor B Circuit Low. Common causes: malfunction of the right rear wheel speed sensor, broken or damaged wiring harness. Estimated repair cost: $33–111.
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
- Check the integrity of the sensor wiring harness
- Inspect the sensor connector for corrosion or damage.
- Check the resistance of the wheel speed sensor
- Clean or replace the gear rotor
- If necessary, replace the wheel speed sensor
- Check the operation of the ABS/ESP control unit
Related codes
Error C0668 by Vehicle Brand
FAQ
What does the C0668 code mean?
C0668 is an OBD-II diagnostic trouble code that indicates: Right Rear Wheel Speed Sensor B Circuit Low
What causes a C0668 error code?
The most common causes of C0668 include: 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.
How do I fix a C0668 diagnostic trouble code?
To fix C0668: Check the integrity of the sensor wiring harness. Inspect the sensor connector for corrosion or damage.. Check the resistance of the wheel speed sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0668?
Limited driving only, diagnose soon
How much does it cost to fix C0668?
The estimated repair cost for C0668 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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