U0072 – BMW DTC

BMW DTC U0072 – Vehicle Communication Bus E (-) shorted to Bus E (+)

DTC U0072 meaning on BMW

DTC U0072 on a BMW indicates that there is a malfunction in the vehicle communication bus E, where the negative side of the bus is shorted to the positive side. This fault can disrupt communication between various control modules in the vehicle, leading to potential issues with data exchange and system operation.

BMW DTC U0072 symptoms

Symptoms of DTC U0072 on a BMW may include:

• Check Engine Light (MIL) illuminated
• Loss of communication with certain vehicle systems
• Erratic behavior of electronic components
• Difficulty starting the vehicle

BMW DTC U0072 causes

Common causes of DTC U0072 on a BMW include:

• Short circuit in the communication bus wiring
• Faulty control module
• Corrosion or poor connections in the bus circuit

BMW DTC U0072 seriousness

The seriousness of DTC U0072 on a BMW lies in the potential disruption of communication between critical vehicle systems. If left unresolved, it can lead to malfunctions in various electronic components and systems, affecting the overall performance and safety of the vehicle.

How to diagnose DTC U0072 on BMW

To diagnose DTC U0072 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer.
2. Inspect the communication bus wiring for any signs of damage or short circuits.
3. Check the connections and integrity of the control modules involved in the communication bus.
4. Perform a continuity test on the bus circuit to identify the location of the short.

How to fix DTC U0072 on BMW

To fix DTC U0072 on a BMW, consider the following steps:

1. Repair any damaged wiring or connections in the communication bus circuit.
2. Replace any faulty control modules contributing to the short circuit.
3. Clean and secure all bus connections to ensure proper communication.
4. Clear the fault codes using a diagnostic scanner after the repairs are completed.

How to erase DTC U0072 on BMW

To erase DTC U0072 on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port.
2. Select the option to clear fault codes from the scanner menu.
3. Follow the on-screen prompts to confirm the deletion of the DTC U0072 code.
4. Once the code is successfully cleared, disconnect the scanner and start the vehicle to ensure the code does not return.

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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