BMW DTC U1126 – Lost Communication With Brake System Control Module Status
DTC U1126 meaning on BMW
DTC U1126 on a BMW indicates a communication error between the vehicle’s control module and the brake system control module. This error code signifies that the control module is unable to establish communication with the brake system control module, leading to potential issues with the brake system’s functionality.
BMW DTC U1126 symptoms
Symptoms of DTC U1126 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Brake system warning messages displayed
- Loss of ABS functionality
- Decreased brake performance
BMW DTC U1126 causes
Common causes of DTC U1126 on a BMW include:
- Faulty brake system control module
- Wiring or connection issues between the control module and brake system module
- Software glitches or communication errors
BMW DTC U1126 seriousness
The seriousness of DTC U1126 on a BMW lies in the potential compromise of the brake system’s functionality. Ignoring this error code can lead to safety risks due to impaired braking performance and loss of ABS features. It is crucial to address this issue promptly to ensure the vehicle’s safety and performance.
How to diagnose DTC U1126 on BMW
To diagnose DTC U1126 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s system.
- Inspect the wiring and connections between the control module and brake system module for any damage or loose connections.
- Check for any software updates or glitches that may be causing communication errors.
How to fix DTC U1126 on BMW
To fix DTC U1126 on a BMW, consider the following:
- Replace the faulty brake system control module if necessary.
- Repair any damaged wiring or connections between the modules.
- Update the software to address any communication errors.
How to erase DTC U1126 on BMW
To erase DTC U1126 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes stored in the system.
- Ensure that the underlying issue causing the error code has been resolved before clearing it.
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.