BMW DTC C1105 – FlexRay_High / FlexRay_Low Circuit/Open
DTC C1105 meaning on BMW
DTC C1105 on a BMW refers to an issue with the FlexRay communication system. This diagnostic trouble code specifically indicates a problem with the FlexRay_High or FlexRay_Low circuit being open or having a fault. The FlexRay system is a high-speed communication network used in modern vehicles for various control modules to communicate with each other.
BMW DTC C1105 symptoms
Symptoms of DTC C1105 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Stability control system malfunction warning
- Loss of ABS and stability control functionality
BMW DTC C1105 causes
Common causes of DTC C1105 on a BMW include:
- Corroded or damaged wiring in the FlexRay communication circuit
- Loose or poor connections in the FlexRay_High or FlexRay_Low circuit
- Faulty FlexRay communication module
BMW DTC C1105 seriousness
The seriousness of DTC C1105 on a BMW lies in the potential loss of ABS and stability control functionality. Driving with this fault may compromise the vehicle’s safety systems, leading to reduced stability and control in certain driving conditions.
How to diagnose DTC C1105 on BMW
To diagnose DTC C1105 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s ABS system
- Inspect the FlexRay communication wiring for any visible damage or corrosion
- Check the connections and continuity in the FlexRay_High and FlexRay_Low circuits
- Test the FlexRay communication module for proper functionality
How to fix DTC C1105 on BMW
To fix DTC C1105 on a BMW, you can try the following:
- Repair or replace any damaged wiring in the FlexRay communication circuit
- Ensure all connections in the FlexRay_High and FlexRay_Low circuits are secure
- Replace the faulty FlexRay communication module if necessary
How to erase DTC C1105 on BMW
To erase DTC C1105 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ABS system’s memory. Once the issue has been fixed and the repairs have been made, clearing the fault codes 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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