C0104
Front ABS Wheel Speed Sensor Left
C0104 is an OBD-II diagnostic trouble code meaning: Front ABS Wheel Speed Sensor Left. Common causes: wheel speed sensor malfunction, broken or damaged wiring harness. Estimated repair cost: $33–89.
Symptoms
- The ABS indicator on the dashboard is on
- ABS system may not work
- Possible false alarms of ABS
- Loss of speed data on the speedometer (in some models)
Causes
- Wheel speed sensor malfunction
- Broken or damaged wiring harness
- Contamination or damage to the ring gear on the hub
- Poor contact in the sensor connector
- ABS control unit malfunction
How to Fix
- Visually check the sensor and wiring for damage
- Clean the sensor and ring gear from dirt
- Check the sensor resistance (usually 800-2000 Ohm)
- Check the integrity of wires and connectors
- If necessary, replace the sensor or repair the wiring
- Clear the error and check if it comes back
Related codes
Error C0104 by Vehicle Brand
FAQ
What does the C0104 code mean?
C0104 is an OBD-II diagnostic trouble code that indicates: Front ABS Wheel Speed Sensor Left
What causes a C0104 error code?
The most common causes of C0104 include: Wheel speed sensor malfunction; Broken or damaged wiring harness; Contamination or damage to the ring gear on the hub; Poor contact in the sensor connector.
How do I fix a C0104 diagnostic trouble code?
To fix C0104: Visually check the sensor and wiring for damage. Clean the sensor and ring gear from dirt. Check the sensor resistance (usually 800-2000 Ohm). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0104?
Limited driving only, diagnose soon
How much does it cost to fix C0104?
The estimated repair cost for C0104 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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