C0038 – BMW DTC

BMW DTC C0038 – Left Rear Wheel Speed Sensor Supply

DTC C0038 meaning on BMW

DTC C0038 on a BMW indicates an issue with the Left Rear Wheel Speed Sensor Supply. This fault code is triggered when the control module detects a problem with the electrical circuit supplying power to the left rear wheel speed sensor.

BMW DTC C0038 symptoms

Symptoms of DTC C0038 on a BMW may include:

• ABS warning light illuminated on the dashboard
• Traction control system malfunction
• Stability control system not functioning properly
• Loss of traction control during driving

BMW DTC C0038 causes

Common causes of DTC C0038 on a BMW include:

• Faulty left rear wheel speed sensor
• Wiring or connector issues in the circuit supplying power to the sensor
• Corrosion or damage to the sensor or its connections

BMW DTC C0038 seriousness

DTC C0038 should be addressed promptly as it can affect the proper functioning of the vehicle’s ABS, traction control, and stability control systems. Driving with this fault unresolved may compromise the safety and stability of the vehicle, especially in adverse road conditions.

How to diagnose DTC C0038 on BMW

To diagnose DTC C0038 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and further details
2. Inspect the left rear wheel speed sensor for any visible damage or corrosion
3. Check the wiring and connectors leading to the sensor for continuity and proper connection
4. Perform a road test to observe the behavior of the ABS and traction control systems

How to fix DTC C0038 on BMW

To fix DTC C0038 on a BMW, you can try the following solutions:

1. Replace the left rear wheel speed sensor if it is found to be faulty
2. Repair or replace any damaged wiring or connectors in the sensor circuit
3. Clean any corrosion from the sensor connections and ensure a secure connection
4. Clear the fault code using a diagnostic scanner after the repair is completed

How to erase DTC C0038 on BMW

To erase DTC C0038 on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Select the option to clear fault codes from the control module
3. Confirm the action and wait for the scanner to erase the DTC C0038 code
4. Perform a final scan to ensure the fault code has been successfully cleared

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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