BMW DTC C10A3 – Brake Pedal Position Sensor ‘B’ Supply Voltage Circuit Low
DTC C10A3 meaning on BMW
The DTC C10A3 on a BMW indicates a fault with the Brake Pedal Position Sensor ‘B’ Supply Voltage Circuit being too low. This sensor is responsible for detecting the position of the brake pedal and providing feedback to the vehicle’s control systems.
BMW DTC C10A3 symptoms
Symptoms of the DTC C10A3 on a BMW may include:
- Malfunction indicator light (MIL) illuminated on the dashboard
- Brake system warning light may be on
- Loss of brake pedal position information
- Possible loss of brake assist functionality
BMW DTC C10A3 causes
Common causes of the DTC C10A3 on a BMW include:
- Faulty brake pedal position sensor ‘B’
- Wiring or connector issues in the sensor circuit
- Low voltage supply to the sensor
BMW DTC C10A3 seriousness
The DTC C10A3 should be addressed promptly as it relates to the brake pedal position sensor, which is crucial for proper brake system operation. Ignoring this issue may lead to potential safety hazards and compromised braking performance.
How to diagnose DTC C10A3 on BMW
To diagnose the DTC C10A3 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes and confirm the presence of DTC C10A3.
- Inspect the wiring and connectors related to the brake pedal position sensor ‘B’ for any visible damage or corrosion.
- Check the voltage supply to the sensor using a multimeter to ensure it meets the specified values.
- If necessary, test the brake pedal position sensor ‘B’ itself for proper functionality.
How to fix DTC C10A3 on BMW
To fix the DTC C10A3 on a BMW, you can take the following actions:
- Replace the faulty brake pedal position sensor ‘B’ if it is determined to be the cause of the low voltage supply.
- Repair or replace any damaged wiring or connectors in the sensor circuit.
- Ensure the voltage supply to the sensor is within the specified range by addressing any issues with the power source.
How to erase DTC C10A3 on BMW
To erase the DTC C10A3 on a BMW after the issue has been resolved, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s system. This will reset the MIL and brake system warning lights, indicating that the problem has been addressed.
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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