U1115 – BMW DTC

BMW DTC U1115 – Lost Communication With Vehicle Mode Status

DTC U1115 meaning on BMW

DTC U1115 on a BMW indicates a communication error with the vehicle mode status. This diagnostic trouble code is triggered when the vehicle’s control modules are unable to communicate with each other to determine the current mode or status of the vehicle.

BMW DTC U1115 symptoms

Symptoms of DTC U1115 on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Loss of certain vehicle functions or features
• Inaccurate or missing information on the instrument cluster

BMW DTC U1115 causes

Common causes of DTC U1115 on a BMW include:

• Faulty wiring or connections in the communication network
• Defective control modules or sensors
• Software issues within the vehicle’s electronic control units

BMW DTC U1115 seriousness

While DTC U1115 may not directly affect the drivability of the vehicle, it is important to address this issue promptly. Ignoring communication errors between control modules can lead to further electrical problems and potentially impact the overall performance of the vehicle.

How to diagnose DTC U1115 on BMW

To diagnose DTC U1115 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s system
2. Check for any related codes or symptoms that may provide additional clues
3. Inspect the wiring harness and connectors for any visible damage or corrosion
4. Perform a communication test using diagnostic tools to identify the faulty module or network issue

How to fix DTC U1115 on BMW

To fix DTC U1115 on a BMW, consider the following:

1. Repair or replace any damaged wiring or connectors in the communication network
2. Update the software of the control modules to the latest version
3. Replace any faulty control modules or sensors causing the communication error
4. Clear the fault codes using a diagnostic scanner after the repairs have been completed

How to erase DTC U1115 on BMW

To erase DTC U1115 on a BMW:

1. Connect a diagnostic scanner to the vehicle’s OBD-II port
2. Select the option to clear fault codes from the control modules
3. Follow the on-screen prompts to erase the DTC U1115 code
4. Verify that the code has been successfully cleared by rescanning the system

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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