P0558 – BMW DTC

BMW DTC P0558 – Brake Booster Pressure Sensor Circuit High

DTC P0558 meaning on BMW

DTC P0558 on a BMW indicates a fault with the brake booster pressure sensor circuit. This code is triggered when the powertrain control module (PCM) detects a high voltage signal from the brake booster pressure sensor, which is responsible for monitoring the pressure within the brake booster.

BMW DTC P0558 symptoms

Symptoms of DTC P0558 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Braking performance may be affected
• Loss of power assistance during braking

BMW DTC P0558 causes

The common causes of DTC P0558 on a BMW include:

• Faulty brake booster pressure sensor
• Wiring issues in the brake booster pressure sensor circuit
• Corrosion or poor connections in the sensor circuit

BMW DTC P0558 seriousness

DTC P0558 should be addressed promptly as it can affect the proper functioning of the brake booster system. Loss of power assistance during braking can compromise vehicle safety and performance.

How to diagnose DTC P0558 on BMW

To diagnose DTC P0558 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code
2. Inspect the brake booster pressure sensor and its wiring for any visible damage
3. Test the sensor’s voltage output using a multimeter
4. Check for any corrosion or poor connections in the sensor circuit

How to fix DTC P0558 on BMW

To fix DTC P0558 on a BMW, you can:

1. Replace the faulty brake booster pressure sensor
2. Repair any damaged wiring in the sensor circuit
3. Clean or replace corroded connectors

How to erase DTC P0558 on BMW

To erase DTC P0558 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault code
2. After fixing the underlying issue, reset the PCM by disconnecting the battery for a few minutes
3. Ensure the repair is successful by driving the vehicle and checking for any recurrence of the fault code

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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