BMW DTC C122D – Left Front Wheel Speed Sensor
DTC C122D meaning on BMW
DTC C122D on a BMW refers to an issue with the Left Front Wheel Speed Sensor. This diagnostic trouble code indicates that there is a malfunction or discrepancy in the signal coming from the wheel speed sensor located on the left front wheel of the vehicle.
BMW DTC C122D symptoms
Symptoms of DTC C122D on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Loss of stability control
- Irregular braking behavior
BMW DTC C122D causes
Common causes of DTC C122D on a BMW include:
- Failed or faulty Left Front Wheel Speed Sensor
- Wiring or connection issues related to the sensor
- Corrosion or dirt affecting the sensor’s performance
BMW DTC C122D seriousness
The seriousness of DTC C122D on a BMW lies in the compromised safety systems of the vehicle. Issues with the wheel speed sensor can affect the proper functioning of the ABS, traction control, and stability control systems, potentially leading to unsafe driving conditions.
How to diagnose DTC C122D on BMW
To diagnose DTC C122D on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer
- Inspect the wiring and connections of the Left Front Wheel Speed Sensor for any damage or corrosion
- Test the sensor’s resistance and output signal using a multimeter
- Compare the sensor’s readings with specifications provided by the manufacturer
How to fix DTC C122D on BMW
To fix DTC C122D on a BMW, you can try the following solutions:
- Replace the Left Front Wheel Speed Sensor if it is found to be faulty
- Repair or replace any damaged wiring or connections related to the sensor
- Clean the sensor and its mounting area to ensure proper contact and functionality
How to erase DTC C122D on BMW
To erase DTC C122D on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. After addressing the underlying issue causing the fault code, clearing the code will reset the system and turn off the warning lights on the dashboard.
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
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