U0119 – BMW DTC

BMW DTC U0119 – Lost Communication With Fuel Cell Control Module

DTC U0119 meaning on BMW

The Diagnostic Trouble Code (DTC) U0119 on a BMW indicates a communication error between the vehicle’s control module and the fuel cell control module. This error means that the control module is unable to establish communication with the fuel cell control module, which can lead to issues with fuel system operation and performance.

BMW DTC U0119 symptoms

Symptoms of the DTC U0119 on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Reduced fuel efficiency
• Engine running rough or stalling
• Difficulty starting the vehicle

BMW DTC U0119 causes

The DTC U0119 on a BMW can be caused by various factors, including:

• Faulty fuel cell control module
• Wiring or connection issues between the control module and fuel cell control module
• Software or programming errors
• Electrical interference or signal disruption

BMW DTC U0119 seriousness

The DTC U0119 should be addressed promptly as it can lead to potential fuel system malfunctions and affect the overall performance of the vehicle. Ignoring this code may result in poor fuel efficiency, engine misfires, or even engine stalling, which can compromise the safety and reliability of the BMW.

How to diagnose DTC U0119 on BMW

To diagnose the DTC U0119 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the specific fault codes stored in the vehicle’s system
2. Inspect the wiring and connections between the control module and fuel cell control module for any damage or corrosion
3. Check for any software updates or reprogramming needed for the control modules
4. Perform a communication test to verify the connection between the modules

How to fix DTC U0119 on BMW

Fixing the DTC U0119 on a BMW may involve the following steps:

1. Repair or replace any damaged wiring or connections between the control module and fuel cell control module
2. Update the software or reprogram the control modules as needed
3. Replace the fuel cell control module if it is found to be faulty
4. Clear the fault codes and perform a test drive to ensure the issue has been resolved

How to erase DTC U0119 on BMW

To erase the DTC U0119 on a BMW, follow these steps:

1. Use a diagnostic scanner to access the vehicle’s onboard computer system
2. Select the option to clear or erase fault codes
3. Confirm the action and wait for the scanner to clear the DTC U0119 code
4. Perform a final check to ensure the code has been successfully erased

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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