P0618 Fault Code

Alternative Fuel Control Module KAM Error

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

The P0618 fault code signifies an error within the Alternative Fuel Control Module, specifically related to the Keep-Alive Memory (KAM). This error typically indicates that the module has encountered issues retaining essential data required for optimal performance.\n\n- The KAM is crucial for storing learned values such as fuel adjustments and operating conditions.\n- When this error arises, the module may fail to recall this data, leading to inefficient fuel management and increased emissions.

What are the symptoms of the P0618 code?

Symptoms related to the P0618 fault code may include:\n\n- Decreased engine performance or power output.\n- Difficulty starting the engine or extended cranking times.\n- Increased fuel consumption and poor fuel efficiency.\n- The illumination of the check engine light on the dashboard.\n- Emission test failures due to elevated pollutants.

What causes the P0618 code?

The causes of a P0618 code can vary, but common culprits include:\n\n- Corrupted KAM data due to a sudden power loss or battery disconnection.\n- Wiring issues, such as shorts or open circuits in the connections to the Alternative Fuel Control Module.\n- Faulty sensors that provide crucial input values to the module, impacting its ability to manage fuel properly.\n- Internal failure or malfunctions within the Alternative Fuel Control Module itself.

How to fix P0618?

To address a P0618 fault code, the following steps are recommended:\n\n- Begin with a thorough inspection of wiring and connectors associated with the Alternative Fuel Control Module. Look for signs of damage or corrosion.\n- Clear the trouble codes using an OBD-II scanner and test drive the vehicle to see if the code returns.\n- If the code reappears, check the module's programming and consider resetting the KAM.\n- If the problem persists, testing or replacing the Alternative Fuel Control Module may be necessary.\n- Ensure all related sensors are functioning correctly and replace any faulty components as needed.