BMW DTC C1243 – Wheel Speed Sensor Supply
DTC C1243 meaning on BMW
DTC C1243 in a BMW indicates an issue with the wheel speed sensor supply. This fault code is triggered when the control module detects a problem with the power supply to the wheel speed sensor.
BMW DTC C1243 symptoms
Symptoms of DTC C1243 in a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Loss of stability control
- Erratic braking behavior
BMW DTC C1243 causes
Common causes of DTC C1243 in a BMW include:
- Faulty wheel speed sensor
- Wiring or connector issues in the wheel speed sensor circuit
- Defective control module
- Power supply problems
BMW DTC C1243 seriousness
DTC C1243 should be addressed promptly as it can affect the proper functioning of the ABS and traction control systems. Ignoring this fault code may compromise the safety and stability of the vehicle, especially during braking and cornering maneuvers.
How to diagnose DTC C1243 on BMW
To diagnose DTC C1243 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and any related codes.
- Inspect the wheel speed sensor and its wiring for any visible damage or corrosion.
- Check the power supply to the wheel speed sensor for proper voltage and continuity.
- Perform a road test to observe the behavior of the ABS and traction control systems.
How to fix DTC C1243 on BMW
To fix DTC C1243 on a BMW, you can try the following solutions:
- Replace the faulty wheel speed sensor if it is found to be defective.
- Repair any damaged wiring or connectors in the wheel speed sensor circuit.
- Check and rectify any power supply issues affecting the wheel speed sensor.
- If necessary, replace the control module responsible for the wheel speed sensor supply.
How to erase DTC C1243 on BMW
To erase DTC C1243 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue causing the fault code, you can reset the system and ensure that the ABS and traction control systems are functioning properly.
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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