C1118 – BMW DTC

BMW DTC C1118 – Vehicle Dynamics Control Module Power Supply ‘A’ Circuit High

DTC C1118 meaning on BMW

DTC C1118 on a BMW refers to a fault with the Vehicle Dynamics Control Module Power Supply ‘A’ Circuit being detected as too high. This fault code indicates an issue with the power supply circuit for the vehicle’s stability control system.

BMW DTC C1118 symptoms

Symptoms of DTC C1118 on a BMW may include:

• Stability control warning light illuminated on the dashboard
• Loss of stability control functionality
• ABS warning light may also be illuminated

BMW DTC C1118 causes

Common causes of DTC C1118 on a BMW include:

• Faulty Vehicle Dynamics Control Module
• Issues with the power supply circuit such as a short or open circuit
• Electrical wiring or connector problems

BMW DTC C1118 seriousness

The seriousness of DTC C1118 on a BMW lies in the potential loss of stability control functionality. This can affect the vehicle’s handling and safety, especially in adverse driving conditions. It is recommended to address this issue promptly to ensure safe operation of the vehicle.

How to diagnose DTC C1118 on BMW

To diagnose DTC C1118 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s system
2. Inspect the Vehicle Dynamics Control Module for any visible damage or signs of malfunction
3. Check the power supply circuit for proper voltage and continuity
4. Inspect the wiring and connectors for any damage or corrosion

How to fix DTC C1118 on BMW

To fix DTC C1118 on a BMW, you may need to:

1. Replace the faulty Vehicle Dynamics Control Module if necessary
2. Repair any issues with the power supply circuit such as fixing shorts or open circuits
3. Repair or replace any damaged wiring or connectors
4. Clear the fault codes and perform a test drive to ensure the issue is resolved

How to erase DTC C1118 on BMW

To erase DTC C1118 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes stored in the vehicle’s system
2. Ensure that the underlying issue causing the fault code has been addressed and resolved
3. Perform a test drive to confirm that the fault code does not reappear

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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