BMW DTC P11FC – Brake Booster Pump Power Supply Circuit Low
DTC P11FC meaning on BMW
DTC P11FC on a BMW refers to a fault in the Brake Booster Pump Power Supply Circuit. This diagnostic trouble code indicates that the power supply voltage to the brake booster pump is lower than the specified threshold.
BMW DTC P11FC symptoms
Symptoms of DTC P11FC on a BMW may include:
- Illuminated Check Engine Light (CEL)
- ABS warning light on the dashboard
- Loss of power assistance in the braking system
- Increased brake pedal effort required
BMW DTC P11FC causes
Common causes of DTC P11FC on a BMW include:
- Faulty brake booster pump
- Wiring or connector issues in the power supply circuit
- Low voltage from the battery or alternator
BMW DTC P11FC seriousness
DTC P11FC is a serious issue that should be addressed promptly. A malfunction in the brake booster pump power supply circuit can compromise the effectiveness of the braking system, potentially leading to unsafe driving conditions.
How to diagnose DTC P11FC on BMW
To diagnose DTC P11FC on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the brake booster pump and related components for any visible damage
- Check the wiring and connectors in the power supply circuit for continuity and proper voltage
- Test the battery and alternator to ensure they are providing sufficient power
How to fix DTC P11FC on BMW
To fix DTC P11FC on a BMW, the following steps may be taken:
- Replace the faulty brake booster pump if necessary
- Repair or replace any damaged wiring or connectors in the power supply circuit
- Ensure the battery and alternator are in good working condition
- Clear the fault codes and perform a test drive to verify the repair
How to erase DTC P11FC on BMW
To erase DTC P11FC on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. After the repair has been completed, clearing the fault codes will reset the Check Engine Light and ABS warning light 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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