C051A
Left Rear Wheel Speed Sensor - Mechanical
C051A is an OBD-II diagnostic trouble code meaning: Left Rear Wheel Speed Sensor - Mechanical. Common causes: physical damage to the wheel speed sensor, contamination or damage to the ring gear on the hub. Estimated repair cost: $22–89.
Symptoms
- ABS/ESP indicator is on
- Cruise control not working
- Incorrect operation of the anti-lock braking system
- Errors related to ABS in the ECU memory
Causes
- Physical damage to the wheel speed sensor
- Contamination or damage to the ring gear on the hub
- Sensor loosening
- Wheel bearing wear affecting sensor performance
- Problems with the sensor wiring harness
How to Fix
- Visual inspection of the sensor and its mounting
- Checking the condition of the ring gear
- Checking the integrity of the wiring harness
- Testing the sensor with a multimeter or oscilloscope
- Replacing the sensor or repairing damaged elements
Related codes
Error C051A by Vehicle Brand
FAQ
What does the C051A code mean?
C051A is an OBD-II diagnostic trouble code that indicates: Left Rear Wheel Speed Sensor - Mechanical
What causes a C051A error code?
The most common causes of C051A include: Physical damage to the wheel speed sensor; Contamination or damage to the ring gear on the hub; Sensor loosening; Wheel bearing wear affecting sensor performance.
How do I fix a C051A diagnostic trouble code?
To fix C051A: Visual inspection of the sensor and its mounting. Checking the condition of the ring gear. Checking the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C051A?
Limited driving only, diagnose soon
How much does it cost to fix C051A?
The estimated repair cost for C051A is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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