C1406
Open or Short in Front Speed Sensor Left Circuit
C1406 is an OBD-II diagnostic trouble code meaning: Open or Short in Front Speed Sensor Left Circuit. Common causes: broken wires in the sensor harness, short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- ABS or ESP indicator is on
- Disabling the ABS or ESP system
- Incorrect operation of cruise control
- Errors in the operation of the stabilization system
Causes
- Broken wires in the sensor harness
- Short circuit in the sensor circuit
- Wheel speed sensor malfunction
- Damage to the sensor connector
- Problems with the ABS/ESP control unit
How to Fix
- Check the integrity of the sensor wiring harness
- Check the sensor connector for damage
- Measure the resistance of the wheel speed sensor
- Check the sensor signal using an oscilloscope
- Replace the wheel speed sensor if necessary
- Check the ABS/ESP control unit for errors
Related codes
FAQ
What does the C1406 code mean?
C1406 is an OBD-II diagnostic trouble code that indicates: Open or Short in Front Speed Sensor Left Circuit
What causes a C1406 error code?
The most common causes of C1406 include: Broken wires in the sensor harness; Short circuit in the sensor circuit; Wheel speed sensor malfunction; Damage to the sensor connector.
How do I fix a C1406 diagnostic trouble code?
To fix C1406: Check the integrity of the sensor wiring harness. Check the sensor connector for damage. Measure the resistance of the wheel speed sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1406?
Limited driving only, diagnose soon
How much does it cost to fix C1406?
The estimated repair cost for C1406 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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