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U1175 – BMW DTC

BMW DTC U1175 – Lost Communication With MSA (Engine Start Automatic)

DTC U1175 meaning on BMW

The Diagnostic Trouble Code (DTC) U1175 for BMW indicates a communication error with the MSA (Engine Start Automatic) system. This code is triggered when the control module is unable to establish communication with the MSA system, which is responsible for automatic engine start functionality.

BMW DTC U1175 symptoms

Symptoms associated with DTC U1175 on a BMW may include:

  • Engine not starting automatically
  • Engine starting issues
  • Warning lights on the dashboard
  • Reduced engine performance

BMW DTC U1175 causes

The potential causes of DTC U1175 on a BMW include:

  • Faulty MSA system
  • Wiring or connection issues
  • Defective control module
  • Software glitches

BMW DTC U1175 seriousness

While DTC U1175 may not directly affect the drivability of the vehicle, it is important to address this issue promptly to ensure the proper functioning of the MSA system. Ignoring this code could lead to further complications and potential safety concerns.

How to diagnose DTC U1175 on BMW

To diagnose DTC U1175 on a BMW, follow these steps:

  1. Use a diagnostic scanner to retrieve the fault codes.
  2. Inspect the wiring and connections related to the MSA system.
  3. Check the MSA system components for any visible damage or malfunctions.
  4. Perform a communication test between the control module and the MSA system.

How to fix DTC U1175 on BMW

To fix DTC U1175 on a BMW, consider the following:

  1. Repair or replace any damaged wiring or connections.
  2. Address any issues with the MSA system components.
  3. Update the control module software if necessary.
  4. Clear the fault codes and perform a test drive to ensure the issue is resolved.

How to erase DTC U1175 on BMW

To erase DTC U1175 on a BMW, use a diagnostic scanner to clear the fault codes stored in the control module memory. After clearing the codes, perform a test drive to verify that the issue has been resolved successfully.

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

← All BMW Diagnostic Trouble Codes

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