C1103 – BMW DTC

BMW DTC C1103 – FlexRay_Low Circuit High

DTC C1103 meaning on BMW

The DTC C1103 code on a BMW indicates an issue with the FlexRay communication network’s low circuit being detected as high. The FlexRay system is a high-speed communication network used in modern vehicles for various control modules to communicate with each other.

BMW DTC C1103 symptoms

Symptoms of the DTC C1103 code on a BMW may include:

• Malfunction indicator light (MIL) or check engine light illuminated on the dashboard
• Communication errors between control modules
• Issues with vehicle stability control systems

BMW DTC C1103 causes

Common causes of the DTC C1103 code on a BMW include:

• Faulty FlexRay communication network wiring
• Loose or poor connections in the FlexRay network
• Defective FlexRay communication module

BMW DTC C1103 seriousness

The seriousness of the DTC C1103 code on a BMW depends on the underlying cause. While the code itself may not directly affect the drivability of the vehicle, it can lead to communication issues between critical control modules, affecting the overall performance and safety systems of the vehicle.

How to diagnose DTC C1103 on BMW

To diagnose the DTC C1103 code on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer
2. Inspect the FlexRay communication network wiring for any visible damage or corrosion
3. Check the connections and terminals in the FlexRay network for tightness and proper contact
4. Test the FlexRay communication module for proper functionality

How to fix DTC C1103 on BMW

To fix the DTC C1103 code on a BMW, the following steps may be taken:

1. Repair or replace any damaged or corroded wiring in the FlexRay communication network
2. Ensure all connections and terminals in the FlexRay network are secure and making proper contact
3. Replace the faulty FlexRay communication module if necessary

How to erase DTC C1103 on BMW

To erase the DTC C1103 code on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the vehicle’s computer. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the system and turn off the malfunction indicator light.