BMW DTC P0555 – Brake Booster Pressure Sensor Circuit
DTC P0555 meaning on BMW
DTC P0555 on a BMW refers to a fault with the brake booster pressure sensor circuit. This diagnostic trouble code indicates that there is an issue with the signal from the brake booster pressure sensor, which is responsible for monitoring the pressure within the brake booster system.
BMW DTC P0555 symptoms
Symptoms of a DTC P0555 on a BMW may include:
- Illuminated Check Engine Light
- Loss of power brakes
- Hard brake pedal feel
BMW DTC P0555 causes
Common causes of a DTC P0555 on a BMW include:
- Faulty brake booster pressure sensor
- Wiring or connector issues in the brake booster pressure sensor circuit
- Low brake fluid level
BMW DTC P0555 seriousness
The seriousness of a DTC P0555 on a BMW should not be ignored, as it can lead to a loss of power brakes, which can affect the vehicle’s braking performance and safety. It is recommended to address this issue promptly.
How to diagnose DTC P0555 on BMW
To diagnose a DTC P0555 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the brake booster pressure sensor and its wiring for any visible damage
- Test the brake booster pressure sensor for proper operation
- Check the brake fluid level
How to fix DTC P0555 on BMW
To fix a DTC P0555 on a BMW, the following steps may be taken:
- Replace the faulty brake booster pressure sensor
- Repair any damaged wiring or connectors in the circuit
- Ensure the brake fluid level is at the correct level
How to erase DTC P0555 on BMW
To erase a DTC P0555 on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been made, the code can be cleared to reset the Check Engine Light and ensure that the issue has been resolved.
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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