BMW DTC U0168 – Lost Communication With Vehicle Security Control Module
DTC U0168 meaning on BMW
DTC U0168 on a BMW indicates a communication error between the vehicle’s control module and the security control module. This error code signifies that the control module is unable to establish communication with the security module, which can potentially affect the vehicle’s security system functionality.
BMW DTC U0168 symptoms
Symptoms of DTC U0168 on a BMW may include:
- Warning lights on the dashboard related to the security system
- Issues with the vehicle’s keyless entry system
- Problems with the immobilizer system
BMW DTC U0168 causes
Common causes of DTC U0168 on a BMW include:
- Faulty wiring or connections between the control module and security module
- Defective security control module
- Software issues within the control module
BMW DTC U0168 seriousness
The seriousness of DTC U0168 on a BMW lies in the potential compromise of the vehicle’s security system. If left unresolved, this communication error can lead to security vulnerabilities and potential issues with starting or operating the vehicle.
How to diagnose DTC U0168 on BMW
To diagnose DTC U0168 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the specific error code
- Inspect the wiring and connections between the control module and security module for any damage or loose connections
- Check for any software updates or reprogramming needed for the control module
How to fix DTC U0168 on BMW
To fix DTC U0168 on a BMW, consider the following solutions:
- Repair or replace any damaged wiring or connections between the control module and security module
- Replace the security control module if found to be defective
- Update or reprogram the software in the control module as needed
How to erase DTC U0168 on BMW
To erase DTC U0168 on a BMW, use a diagnostic scanner to clear the error code from the vehicle’s system. Once the underlying issue has been addressed and fixed, the error code can be cleared to reset the system and ensure proper functionality.
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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