BMW DTC C1028 – Brake Booster Pressure Sensor Supply Voltage Circuit
DTC C1028 meaning on BMW
DTC C1028 on a BMW refers to an issue with the Brake Booster Pressure Sensor Supply Voltage Circuit. This diagnostic trouble code indicates that there is a problem with the voltage supply to the brake booster pressure sensor in the vehicle’s braking system.
BMW DTC C1028 symptoms
Symptoms of DTC C1028 on a BMW may include:
- Brake warning light illuminated on the dashboard
- Loss of power assistance in the braking system
- Hard brake pedal feel
BMW DTC C1028 causes
Common causes of DTC C1028 on a BMW include:
- Faulty brake booster pressure sensor
- Wiring or connector issues in the brake booster pressure sensor circuit
- Low voltage supply to the sensor
BMW DTC C1028 seriousness
The seriousness of DTC C1028 on a BMW should not be ignored, as it can affect the proper functioning of the vehicle’s braking system. Driving with this fault may compromise the safety and performance of the brakes.
How to diagnose DTC C1028 on BMW
To diagnose DTC C1028 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer
- Inspect the brake booster pressure sensor and its wiring for any visible damage or corrosion
- Check the voltage supply to the sensor using a multimeter
How to fix DTC C1028 on BMW
To fix DTC C1028 on a BMW, you may need to:
- Replace the faulty brake booster pressure sensor
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Ensure proper voltage supply to the sensor
How to erase DTC C1028 on BMW
To erase DTC C1028 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes from the vehicle’s computer
- After fixing the underlying issue, drive the vehicle to allow the system to recheck and confirm the fault 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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.