C103D
Rear Wheel Speed Sensor Signal Erratic Performance
C103D is an OBD-II diagnostic trouble code meaning: Rear Wheel Speed Sensor Signal Erratic Performance. Common causes: dirty or damaged speed sensor, damage to the wiring harness to the sensor. Estimated repair cost: $33–111.
Symptoms
- Unstable ABS/ESP operation
- The stabilization system malfunction indicator is on
- Disabling cruise control
- Incorrect speedometer readings (rare)
Causes
- Dirty or damaged speed sensor
- Damage to the wiring harness to the sensor
- Worn or dirty magnetic ring on the hub
- Problems with the sensor connector (corrosion, poor contact)
- ABS control unit malfunction
How to Fix
- Visual inspection of the sensor and wires for damage
- Cleaning the sensor and magnetic ring from dirt
- Checking the sensor resistance (usually 800-2200 ohms)
- Inspect the connector for corrosion
- Checking the integrity of the wiring harness
- Replace the sensor if necessary
- Clearing Error Codes and Test Ride
Related codes
FAQ
What does the C103D code mean?
C103D is an OBD-II diagnostic trouble code that indicates: Rear Wheel Speed Sensor Signal Erratic Performance
What causes a C103D error code?
The most common causes of C103D include: Dirty or damaged speed sensor; Damage to the wiring harness to the sensor; Worn or dirty magnetic ring on the hub; Problems with the sensor connector (corrosion, poor contact).
How do I fix a C103D diagnostic trouble code?
To fix C103D: Visual inspection of the sensor and wires for damage. Cleaning the sensor and magnetic ring from dirt. Checking the sensor resistance (usually 800-2200 ohms). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C103D?
Limited driving only, diagnose soon
How much does it cost to fix C103D?
The estimated repair cost for C103D is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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