BMW DTC C120F – Right Rear Wheel Speed Sensor Drive Off Recognition
DTC C120F meaning on BMW
DTC C120F on a BMW refers to the Right Rear Wheel Speed Sensor Drive Off Recognition fault. This fault code indicates that the vehicle’s onboard computer has detected an issue with the right rear wheel speed sensor system, specifically related to drive-off recognition.
BMW DTC C120F symptoms
Symptoms of DTC C120F on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Loss of stability control
- Decreased braking performance
BMW DTC C120F causes
Common causes of DTC C120F on a BMW include:
- Failed or malfunctioning right rear wheel speed sensor
- Wiring or connection issues in the right rear wheel speed sensor circuit
- Corrosion or dirt affecting the sensor’s performance
- Faulty ABS control module
BMW DTC C120F seriousness
The seriousness of DTC C120F on a BMW lies in the potential safety implications. Issues with the right rear wheel speed sensor can affect the vehicle’s stability control, traction control, and ABS systems, compromising overall safety and handling.
How to diagnose DTC C120F on BMW
To diagnose DTC C120F on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s ABS system.
- Inspect the right rear wheel speed sensor and its wiring for any visible damage or corrosion.
- Perform a visual inspection of the ABS control module and related components.
- Test the right rear wheel speed sensor using a multimeter to check for proper resistance and signal output.
How to fix DTC C120F on BMW
To fix DTC C120F on a BMW, you can try the following solutions:
- Replace the right rear wheel speed sensor if it is found to be faulty.
- Repair any damaged wiring or connections in the sensor circuit.
- Clean the sensor and its mounting area to ensure proper operation.
- If necessary, replace the ABS control module.
How to erase DTC C120F on BMW
To erase DTC C120F on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s ABS system. Once the issue has been addressed and fixed, clearing the fault codes should 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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