BMW DTC C1203 – Wheel Speed Sensor Front/Right Circuit/Open
DTC C1203 meaning on BMW
The DTC C1203 for BMW indicates a fault in the Wheel Speed Sensor Front/Right Circuit due to an open circuit. This means that the electronic control unit (ECU) is unable to receive data from the front right wheel speed sensor, which can affect the vehicle’s stability control system.
BMW DTC C1203 symptoms
Symptoms of the DTC C1203 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Loss of stability control
- Increased stopping distance during braking
BMW DTC C1203 causes
The common causes of the DTC C1203 on a BMW include:
- Faulty front right wheel speed sensor
- Broken or damaged wiring in the sensor circuit
- Corrosion or poor connections in the sensor circuit
- ECU malfunction
BMW DTC C1203 seriousness
The DTC C1203 for BMW is considered a serious issue as it can compromise the vehicle’s safety systems, such as ABS and traction control. Driving with this fault can lead to reduced stability and control, especially during braking and cornering maneuvers.
How to diagnose DTC C1203 on BMW
To diagnose the DTC C1203 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the ECU
- Inspect the front right wheel speed sensor for any physical damage or contamination
- Check the wiring and connectors in the sensor circuit for continuity and proper connections
- Perform a visual inspection of the ECU for signs of damage or water ingress
How to fix DTC C1203 on BMW
To fix the DTC C1203 on a BMW, you can:
- Replace the front right wheel speed sensor if faulty
- Repair or replace any damaged wiring in the sensor circuit
- Clean and secure the connections in the sensor circuit
- If the ECU is faulty, it may need to be repaired or replaced by a professional
How to erase DTC C1203 on BMW
To erase the DTC C1203 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes from the ECU
- After fixing the underlying issue, drive the vehicle to allow the ECU to relearn the sensor data
- Ensure that the ABS and traction control systems are functioning properly after clearing the fault code