BMW DTC U0071 – Vehicle Communication Bus E (-) High
DTC U0071 meaning on BMW
The DTC U0071 code for BMW refers to a communication bus error. Specifically, it indicates that there is a high voltage condition detected on the vehicle communication bus E (-) line.
BMW DTC U0071 symptoms
Symptoms of the DTC U0071 code on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Problems with communication between various control modules
- Issues with data transfer between vehicle systems
BMW DTC U0071 causes
Common causes of the DTC U0071 code on a BMW include:
- Faulty wiring or connectors in the communication bus system
- Defective control modules or sensors
- Interference from aftermarket electronic devices
BMW DTC U0071 seriousness
While the DTC U0071 code may not always result in immediate drivability issues, it is important to address communication bus errors promptly. Ignoring this code could lead to further malfunctions in the vehicle’s electronic systems.
How to diagnose DTC U0071 on BMW
To diagnose the DTC U0071 code on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the wiring and connectors in the communication bus system
- Check for any loose connections or damaged components
- Test the control modules and sensors for proper functionality
How to fix DTC U0071 on BMW
To fix the DTC U0071 code on a BMW, the following steps may be taken:
- Repair or replace any damaged wiring or connectors in the communication bus system
- Address any issues with control modules or sensors that may be causing the communication error
- Ensure that aftermarket electronic devices are not interfering with the vehicle’s communication bus
How to erase DTC U0071 on BMW
To erase the DTC U0071 code on a BMW, the fault codes can be cleared using a diagnostic scanner. After addressing the underlying cause of the communication bus error and making necessary repairs, the code can be reset to turn off the Check Engine Light.