U0118 – BMW DTC

BMW DTC U0118 – Lost Communication With Fuel Additive Control Module

DTC U0118 meaning on BMW

DTC U0118 on a BMW indicates a communication error between the vehicle’s engine control module (ECM) and the Fuel Additive Control Module. This error code specifically points to a lost communication with the Fuel Additive Control Module.

BMW DTC U0118 symptoms

Symptoms of DTC U0118 on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Reduced engine performance or power
• Issues with the fuel system
• Possible stalling or rough idling

BMW DTC U0118 causes

The potential causes of DTC U0118 on a BMW include:

• Faulty Fuel Additive Control Module
• Wiring or connection issues between the ECM and Fuel Additive Control Module
• Software or programming issues

BMW DTC U0118 seriousness

While DTC U0118 may not always result in immediate drivability issues, it is important to address this code promptly. Ignoring communication errors between critical modules can lead to further complications and potential engine performance issues.

How to diagnose DTC U0118 on BMW

To diagnose DTC U0118 on a BMW, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the specific error code
2. Inspect the wiring and connections between the ECM and Fuel Additive Control Module
3. Check for any software updates or reprogramming needed
4. Test the Fuel Additive Control Module for functionality

How to fix DTC U0118 on BMW

To fix DTC U0118 on a BMW, the following steps may be taken:

1. Repair or replace any damaged wiring or connections
2. Replace the faulty Fuel Additive Control Module if necessary
3. Update software or reprogram modules as needed
4. Clear the error code and perform a test drive to ensure the issue is resolved

How to erase DTC U0118 on BMW

To erase DTC U0118 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the error code
2. Perform a test drive to ensure the code does not reappear
3. If the code persists, further diagnosis and repairs may be necessary

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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