BMW DTC C003B – Right Rear Wheel Speed Sensor Supply
DTC C003B meaning on BMW
DTC C003B on a BMW indicates an issue with the right rear wheel speed sensor supply. This fault code is related to the electrical circuit that supplies power to the right rear wheel speed sensor.
BMW DTC C003B symptoms
Symptoms of DTC C003B on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Loss of stability control
- Erratic behavior of the ABS system
BMW DTC C003B causes
Common causes of DTC C003B on a BMW include:
- Faulty right rear wheel speed sensor
- Wiring or connector issues in the sensor circuit
- Corrosion or damage to the sensor or its wiring
- Faulty ABS control module
BMW DTC C003B seriousness
The seriousness of DTC C003B on a BMW lies in the compromised functionality of the ABS and stability control systems. Driving with this fault unresolved can affect the vehicle’s ability to maintain traction and stability during braking and cornering maneuvers.
How to diagnose DTC C003B on BMW
To diagnose DTC C003B on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the ABS system
- Inspect the right rear wheel speed sensor and its wiring for any visible damage or corrosion
- Perform a continuity test on the sensor circuit to check for any open or short circuits
- Check the power supply to the sensor using a multimeter
How to fix DTC C003B on BMW
To fix DTC C003B on a BMW, you can try the following solutions:
- Replace the right rear wheel speed sensor if it is found to be faulty
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Clean any corrosion from the sensor and its connections
- If the issue persists, consider checking the ABS control module for faults
How to erase DTC C003B on BMW
To erase DTC C003B on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ABS system’s memory. Once the issue has been resolved and the fault codes erased, the ABS warning light should turn off.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.