P0618 – BMW DTC

BMW DTC P0618 – Alternative Fuel Control Module KAM Error

DTC P0618 meaning on BMW

The Diagnostic Trouble Code (DTC) P0618 for BMW refers to an error related to the Alternative Fuel Control Module Keep Alive Memory (KAM). This code indicates that there is an issue with the KAM in the alternative fuel control module, which is responsible for storing critical information needed for proper operation.

BMW DTC P0618 symptoms

Symptoms of a DTC P0618 on a BMW may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Engine running rough or misfiring
• Reduced engine performance
• Difficulty starting the vehicle

BMW DTC P0618 causes

The common causes of a DTC P0618 on a BMW include:

• Corroded or damaged wiring in the alternative fuel control module circuit
• Faulty alternative fuel control module
• Issues with the power supply to the alternative fuel control module

BMW DTC P0618 seriousness

While a DTC P0618 may not always result in immediate drivability issues, it is important to address this code promptly. Ignoring this code can lead to potential performance issues and may cause further damage to the vehicle over time.

How to diagnose DTC P0618 on BMW

To diagnose a DTC P0618 on a BMW, a mechanic would typically perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the wiring and connectors in the alternative fuel control module circuit for any damage or corrosion
3. Check the power supply to the alternative fuel control module
4. Test the alternative fuel control module for proper functionality

How to fix DTC P0618 on BMW

To fix a DTC P0618 on a BMW, the following steps may be taken:

1. Repair or replace any damaged wiring or connectors in the alternative fuel control module circuit
2. Replace the alternative fuel control module if it is found to be faulty
3. Ensure proper power supply to the alternative fuel control module
4. Clear the fault code and perform a test drive to verify the repair

How to erase DTC P0618 on BMW

To erase a DTC P0618 on a BMW, the fault code can be cleared using a diagnostic scanner. After the repair has been completed, the mechanic can use the scanner to clear the code from the vehicle’s memory. It is important to ensure that the underlying issue causing the fault code has been addressed before clearing the code.

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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