What is SPN 4364 & How to Solve It?

What is SPN 4364:

SPN 4364 refers to an issue with the Fuel Injector Control Module (FICM). This fault typically involves a problem with the voltage regulation or communication from the FICM, which can affect the fuel injectors' performance and lead to improper fuel delivery.

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Why This Happens:

• Faulty Fuel Injector Control Module (FICM).
  
• Damaged or shorted wiring in the FICM circuit.
  
• Power supply issues affecting the FICM voltage.
  
• Corroded or loose connectors in the FICM circuit.
  
• ECM failure to interpret the data from the FICM properly.
  
  

How to Fix It:

1. Inspect the FICM for visible damage or malfunction.
   
2. Test the FICM’s voltage and resistance to ensure proper functioning.
   
3. Check the wiring and connectors for damage, corrosion, or loose connections.
   
4. Replace the faulty FICM if necessary.
   
5. Ensure proper power supply to the FICM and verify communication with the ECM.
   
   

How to Avoid It Before It Happens:

• Regularly inspect the FICM and wiring for damage or wear.
  
• Ensure proper power supply to the FICM.
  
• Keep connectors clean and free from corrosion.
  
• Perform routine diagnostic checks to monitor FICM performance.
  
• Clue’s Fuel Management services help ensure that your fuel injector control system remains fully functional, preventing issues from arising.