BMW DTC U1849 – Invalid Data Received From Universal Charger Extension Control Module
DTC U1849 meaning on BMW
The Diagnostic Trouble Code (DTC) U1849 on a BMW indicates that the vehicle’s onboard diagnostic system has detected invalid data being received from the Universal Charger Extension Control Module. This module is responsible for managing the charging functions of the vehicle, particularly related to the charging of the battery or other electrical components.
BMW DTC U1849 symptoms
Symptoms of the BMW DTC U1849 may include issues with the charging system, such as slow or erratic charging of the battery, failure to charge the battery properly, or problems with other electrical components that rely on the charging system.
BMW DTC U1849 causes
The causes of the BMW DTC U1849 can vary, but common reasons include faulty wiring connections, a malfunctioning Universal Charger Extension Control Module, software glitches, or issues with the communication network between the control module and other vehicle systems.
BMW DTC U1849 seriousness
The seriousness of the BMW DTC U1849 code lies in the potential impact on the vehicle’s charging system and overall electrical functionality. Ignoring this code can lead to battery issues, electrical component failures, and potential breakdowns due to insufficient power supply.
How to diagnose DTC U1849 on BMW
To diagnose the DTC U1849 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s computer system. They would then inspect the wiring connections, test the Universal Charger Extension Control Module, and check for any software updates or communication network issues.
How to fix DTC U1849 on BMW
Fixing the BMW DTC U1849 code may involve repairing or replacing faulty wiring connections, replacing the Universal Charger Extension Control Module if necessary, updating software as recommended by the manufacturer, and ensuring proper communication between the control module and other vehicle systems.
How to erase DTC U1849 on BMW
To erase the DTC U1849 on a BMW, a mechanic would typically use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer system. Once the underlying issue has been addressed and fixed, the code can be cleared to reset the system and ensure that the problem has been resolved.
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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