BMW DTC U1855 – Message Monitoring Operating Mode Drive Motor ‘A’ Traction Signal Error
DTC U1855 meaning on BMW
DTC U1855 on a BMW refers to a Message Monitoring Operating Mode Drive Motor ‘A’ Traction Signal Error. This diagnostic trouble code indicates an issue with the traction signal for Drive Motor ‘A’ in the vehicle’s system.
BMW DTC U1855 symptoms
Symptoms of DTC U1855 on a BMW may include:
- Loss of traction control
- Reduced performance
- Warning lights on the dashboard
BMW DTC U1855 causes
Common causes of DTC U1855 on a BMW include:
- Faulty traction control module
- Wiring issues or loose connections
- Sensor malfunction
BMW DTC U1855 seriousness
DTC U1855 should be addressed promptly as it can affect the vehicle’s traction control system, leading to potential safety issues and reduced drivability.
How to diagnose DTC U1855 on BMW
To diagnose DTC U1855 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault codes.
- Inspect the traction control module and related wiring for any visible damage.
- Test the sensors associated with Drive Motor ‘A’ for proper functionality.
How to fix DTC U1855 on BMW
To fix DTC U1855 on a BMW, consider the following:
- Repair or replace any damaged wiring or connections.
- Replace the traction control module if faulty.
- Calibrate or replace sensors as needed.
How to erase DTC U1855 on BMW
To erase DTC U1855 on a BMW, you can use a diagnostic scanner to clear the fault codes after addressing the underlying issue causing the error.
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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