P2584 Fault Code

Fuel Additive Control Module Requested MIL Illumination

• What does that mean?
• Symptoms
• Causes
• Solutions

The Fuel Additive Control Module (FACM) is responsible for managing the injection of fuel additives to optimize combustion and reduce emissions. When this module detects an issue requiring the Malfunction Indicator Lamp (MIL) to be illuminated, it signals that there's a problem that needs attention.

• The FACM ensures proper functioning of fuel additives.
• An illuminated MIL can indicate that the system needs to be inspected for issues.
• Ignoring these warnings may lead to reduced fuel efficiency and increased emissions.

What are the symptoms of the P2584 code?

Common symptoms associated with a MIL illumination for the Fuel Additive Control Module include:

• Check Engine light on the dashboard.
• Decreased engine performance, including loss of power and acceleration issues.
• Increased fuel consumption due to inefficient combustion.
• Emission test failures during inspections.

What causes the P2584 code?

The MIL illumination can be triggered by various factors such as:

• Malfunctioning sensors detecting improper additive levels.
• Faults within the fuel system, such as blockages or leaks.
• Electronic issues affecting the communication between the FACM and the vehicle’s engine control unit (ECU).
• Low-quality or incorrect fuel additives being used.

How to fix P2584?

To address the Fuel Additive Control Module requested MIL illumination, follow these steps:

• Perform a diagnostic scan to retrieve fault codes associated with the FACM.
• Inspect and replace any faulty sensors or wiring.
• Check for leaks or blockages in the fuel system and correct any issues found.
• Ensure the correct type of fuel additive is being used, replacing it if necessary.
• Reset the fault codes and monitor the system to ensure that the MIL does not re-illuminate.