BMW DTC U0145 – Lost Communication With Body Control Module ‘E’
DTC U0145 meaning on BMW
The DTC U0145 code on a BMW indicates a communication error between the vehicle’s Engine Control Module (ECM) and the Body Control Module ‘E’. This error means that the ECM is unable to establish communication with the Body Control Module ‘E’, which can lead to various issues related to controlling functions such as lighting, power windows, central locking, and other body-related systems.
BMW DTC U0145 symptoms
Symptoms of the DTC U0145 code on a BMW may include:
- Malfunctioning interior lights
- Problems with power windows
- Issues with central locking system
- Erratic behavior of exterior lights
- Warning lights on the dashboard
BMW DTC U0145 causes
The DTC U0145 code on a BMW can be caused by various factors, including:
- Loose or corroded wiring connections between the ECM and Body Control Module ‘E’
- A faulty Body Control Module ‘E’
- Software issues within the ECM or Body Control Module ‘E’
- Electrical interference or short circuits
BMW DTC U0145 seriousness
The DTC U0145 code should be addressed promptly as it can lead to the malfunctioning of critical body-related systems in the vehicle. Ignoring this code may result in safety hazards or inconvenience due to the loss of control over essential functions like lighting and locking mechanisms.
How to diagnose DTC U0145 on BMW
To diagnose the DTC U0145 code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s ECM
- Inspect the wiring harness and connectors between the ECM and Body Control Module ‘E’ for any damage or corrosion
- Check for any loose connections or poor grounds
- Test the Body Control Module ‘E’ for proper functionality
- Verify software versions and update if necessary
How to fix DTC U0145 on BMW
To fix the DTC U0145 code on a BMW, the following steps may be taken:
- Repair or replace any damaged wiring harnesses or connectors
- Address any loose connections or poor grounds
- Replace the faulty Body Control Module ‘E’ if necessary
- Update software in the ECM and Body Control Module ‘E’
- Clear the fault codes and perform a test drive to ensure the issue is resolved
How to erase DTC U0145 on BMW
To erase the DTC U0145 code on a BMW, follow these steps:
- Use a diagnostic scanner to clear the fault codes stored in the ECM
- Perform a test drive to ensure the code does not reappear
- If the code persists, further diagnosis and repairs may be necessary
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.