U1852 – BMW DTC

BMW DTC U1852 – Lost Communication with Operating Mode Drive Motor ‘A’ Traction

DTC U1852 meaning on BMW

DTC U1852 on a BMW indicates a communication error with the Operating Mode Drive Motor ‘A’ Traction system. This fault code is specific to the traction control system and suggests a problem with the communication between the various components involved in controlling the drive motor.

BMW DTC U1852 symptoms

Symptoms of DTC U1852 on a BMW may include:

• Loss of traction control functionality
• Warning lights on the dashboard related to the traction control system
• Reduced performance or drivability issues

BMW DTC U1852 causes

Common causes of DTC U1852 on a BMW include:

• Faulty Operating Mode Drive Motor ‘A’
• Wiring or connection issues in the traction control system
• Defective sensors related to the traction control system

BMW DTC U1852 seriousness

The seriousness of DTC U1852 on a BMW depends on the driving conditions and the extent of the traction control system’s failure. While the vehicle may still be operable, it is important to address this issue promptly to ensure safe driving conditions and optimal vehicle performance.

How to diagnose DTC U1852 on BMW

To diagnose DTC U1852 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 and connections related to the Operating Mode Drive Motor ‘A’ Traction system for any visible damage or corrosion.
3. Test the sensors and components associated with the traction control system to identify any faulty parts.

How to fix DTC U1852 on BMW

To fix DTC U1852 on a BMW, consider the following:

1. Replace any faulty sensors or components in the traction control system.
2. Repair or replace damaged wiring or connections related to the Operating Mode Drive Motor ‘A’ Traction system.
3. Clear the fault codes using a diagnostic scanner after completing the repairs.

How to erase DTC U1852 on BMW

To erase DTC U1852 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’s menu.
3. Follow the on-screen instructions to erase the DTC U1852 code from the vehicle’s computer.

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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