U008E – BMW DTC

BMW DTC U008E – Vehicle Communication Bus G (-) Open

DTC U008E meaning on BMW

The DTC U008E code on a BMW indicates a Vehicle Communication Bus G (-) Open fault. This fault occurs when there is an open circuit or a break in the communication bus network, specifically on the negative side of the G bus.

BMW DTC U008E symptoms

Symptoms of the DTC U008E code on a BMW may include:

• Malfunction indicator light (MIL) illuminated on the dashboard
• Loss of communication with various control modules
• Erratic behavior of electronic components
• Problems with vehicle starting or running

BMW DTC U008E causes

Common causes of the DTC U008E code on a BMW include:

• Corroded or damaged wiring harness
• Loose or disconnected connectors in the communication bus network
• Faulty control module affecting the communication bus
• Short circuit in the communication bus system

BMW DTC U008E seriousness

The DTC U008E code should be addressed promptly as it can lead to communication issues between various control modules in the vehicle. Ignoring this fault may result in unreliable operation of electronic systems and potential safety hazards.

How to diagnose DTC U008E on BMW

To diagnose the DTC U008E code on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer.
2. Inspect the wiring harness and connectors in the communication bus network for any visible damage or corrosion.
3. Check for continuity and resistance in the communication bus circuits using a multimeter.
4. Test the control modules connected to the communication bus for proper operation.

How to fix DTC U008E on BMW

To fix the DTC U008E code on a BMW, consider the following steps:

1. Repair or replace any damaged wiring harness or connectors in the communication bus network.
2. Address any corrosion or loose connections in the communication bus system.
3. Replace any faulty control modules affecting the communication bus.
4. Clear the fault codes using a diagnostic scanner after completing the repairs.

How to erase DTC U008E on BMW

To erase the DTC U008E code on a BMW, follow these steps:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port.
2. Select the option to erase fault codes from the vehicle’s computer.
3. Follow the on-screen prompts to clear the DTC U008E code.
4. Verify that the fault code has been successfully erased by rescanning the vehicle.

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.