C101C
Right Front Wheel Speed Sensor Signal Erratic Performance
C101C is an OBD-II diagnostic trouble code meaning: Right Front Wheel Speed Sensor Signal Erratic Performance. Common causes: damaged wheel speed sensor, sensor or magnetic ring dirty. Estimated repair cost: $22–111.
Symptoms
- The ABS/ESP indicator on the dashboard is on
- ABS system may not work
- Errors related to ABS/ESP
- Incorrect operation of cruise control (if equipped)
Causes
- Damaged wheel speed sensor
- Sensor or magnetic ring dirty
- Broken or damaged sensor wiring harness
- Contact corrosion
- Problems with the magnetic ring (cracks, chips)
- ABS control unit malfunction
How to Fix
- Visually check the sensor and wiring harness for damage
- Clean the sensor and magnetic ring from dirt
- Check sensor resistance (compare with specifications)
- Check the sensor signal with an oscilloscope when the wheel rotates
- Replace sensor or magnetic ring if damaged
- Check the contacts and clean them if necessary
- Check ABS control unit (if necessary)
Related codes
FAQ
What does the C101C code mean?
C101C is an OBD-II diagnostic trouble code that indicates: Right Front Wheel Speed Sensor Signal Erratic Performance
What causes a C101C error code?
The most common causes of C101C include: Damaged wheel speed sensor; Sensor or magnetic ring dirty; Broken or damaged sensor wiring harness; Contact corrosion.
How do I fix a C101C diagnostic trouble code?
To fix C101C: Visually check the sensor and wiring harness for damage. Clean the sensor and magnetic ring from dirt. Check sensor resistance (compare with specifications). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C101C?
Limited driving only, diagnose soon
How much does it cost to fix C101C?
The estimated repair cost for C101C is $22–111. Actual cost depends on your vehicle, location, and labor rates.
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