BMW DTC C1027 – Brake Booster Pressure Sensor Signal Implausible
DTC C1027 meaning on BMW
DTC C1027 on a BMW refers to the Brake Booster Pressure Sensor Signal Implausible fault. This diagnostic trouble code indicates that the signal from the brake booster pressure sensor is not within the expected range or is not logical based on other sensor inputs.
BMW DTC C1027 symptoms
Symptoms of DTC C1027 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Brake system warning light activated
- Decreased brake performance or responsiveness
BMW DTC C1027 causes
Common causes of DTC C1027 on a BMW include:
- Malfunctioning brake booster pressure sensor
- Wiring or connector issues in the brake booster pressure sensor circuit
- Faulty brake booster
BMW DTC C1027 seriousness
The seriousness of DTC C1027 on a BMW lies in the compromised brake system functionality. Ignoring this fault can lead to unsafe driving conditions and potential brake failure. It is crucial to address this issue promptly.
How to diagnose DTC C1027 on BMW
To diagnose DTC C1027 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s system.
- Inspect the brake booster pressure sensor and its wiring for any visible damage or corrosion.
- Test the brake booster pressure sensor using a multimeter to check for proper voltage and resistance readings.
- Check the brake booster for any signs of malfunction.
How to fix DTC C1027 on BMW
To fix DTC C1027 on a BMW, consider the following steps:
- Replace the faulty brake booster pressure sensor if it is determined to be the cause of the issue.
- Repair or replace any damaged wiring or connectors in the brake booster pressure sensor circuit.
- If the brake booster is faulty, replace it with a new or properly functioning unit.
How to erase DTC C1027 on BMW
To erase DTC C1027 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s system. After addressing the underlying issue causing the fault code, clearing the code will reset the system and turn off the warning lights 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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