The OBD code C003A indicates a fault with the Right Rear Wheel Speed Sensor in the AntiLock Brake System (ABS).
Symptoms include the ABS warning light and engine light being illuminated.
This issue is commonly caused by a faulty sensor, open or shorted sensor harness, or poor electrical connection.
It is important to visually inspect the sensor, wiring harness, and connectors for any damage or corrosion.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the c003a OBD Code
The vehicle displays an ABS warning light on the dashboard with fault code C003A stored.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of ABS functionality.
- Brake pedal may feel different during braking.
- Unusual noises coming from the ABS system.
Causes of the c003a OBD Code
Possible triggers for fault code C003A include wheel speed sensor issues and wiring faults.
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- C003A can be caused by a Faulty Right Rear Wheel Speed Sensor.
- A Right Rear Wheel Speed Sensor harness that is open or shorted.
- A Right Rear Wheel Speed Sensor circuit with poor electrical connection.
Fixing Error Code c003a Step By Step
Replace the faulty ABS control module to address fault code C003A.
- To fix OBDII code C003A, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the ABS control module.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- If any issues are found during the inspection, repair or replace the damaged wiring or connectors as necessary.
- Clear the fault code using a diagnostic scan tool.
- Test drive the vehicle to ensure the code does not return, indicating a successful repair.
Cost Of Fixing c003a Fault Code
Diagnosing and repairing fault code C003A may involve inspecting and possibly replacing the wheel speed sensor.
The cost to diagnose and fix OBD code C003A depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour.
The total cost will vary based on shop rates, complexity of the issue, and any additional parts or services needed.
Details of the c003a OBD Code
Fault code C003A relates to the right rear wheel speed sensor circuit malfunction.
OBD code C003A means that the right rear wheel speed sensor circuit has a malfunction.
This code is triggered by the AntiLock Brake System (ABS) module when it detects an issue with the signal from the right rear wheel speed sensor.
The ABS module uses this sensor to monitor the speed of the right rear wheel to help prevent wheel lockup during braking.
Mechanic’s Tech Notes
Code C003A indicates a problem with the right rear wheel speed sensor circuit.
OBDII code C003A indicates a problem with the Transmission Control Module (TCM).
To diagnose, check TCM power and ground using a multimeter.
Use a scan tool to confirm TCM communication over the CAN network.
Inspect wiring harness and connectors for damage, and check connector pins for issues like being broken, bent, pushed out, or corroded.
Reflashing the TCM may be necessary to resolve the issue.
FAQ
OBD code C003A indicates an issue with the Right Rear Wheel Speed Sensor. Check sensor, harness, and connections for faults to resolve ABS and engine light warnings.
Common symptoms for OBD code C003A include ABS warning light on, engine light on, caused by faulty right rear wheel speed sensor or related wiring issues. Fix: Inspect and repair sensor and wiring.
Diagnose OBD code C003A by checking the right rear wheel speed sensor and its wiring for faults. Repair any issues found to resolve ABS warning light.
Wrap Up
If your ABS warning light is on and you’re seeing OBDII code c003a, it may indicate a faulty right rear wheel speed sensor or issues with the sensor circuit.
This could be caused by a damaged sensor, wiring harness problems, or poor connections.
To address OBDII code c003a, start by inspecting the right rear wheel speed sensor and its wiring for any visible damage.
Test the sensor’s resistance and check the connector for corrosion or loose pins.
Replace the sensor if necessary and ensure all connections are secure.
