What is SPN 3610 & How to Solve It?

What is SPN 3610

SPN 3610: Refers to a fault related to the fuel temperature sensor, indicating that the fuel temperature is outside of the expected range.

When SPN 3610 appears, it means the ECM is receiving abnormal fuel temperature data, which could affect fuel flow and engine performance.

‍

Why It Happened

This fault is typically caused by:

• A faulty or damaged fuel temperature sensor.
  
• Worn-out or frayed wiring between the sensor and ECM.
  
• Corrosion or contamination in the sensor or connectors.
  
• The fuel temperature being outside normal operating conditions.
  
• A software issue within the ECM affecting the sensor data.
  
  

How to Resolve It

To resolve SPN 3610:

1. Inspect the wiring and connections between the fuel temperature sensor and ECM.
   
2. Test the fuel temperature sensor for faults and replace if needed.
   
3. Check for environmental factors that may cause extreme fuel temperature, such as high ambient temperatures or poor fuel quality.
   
4. Clear the fault code and verify the fix by restarting the engine.
   
   

How to Avoid Before It Happens

To prevent SPN 3610:

• Regularly check and maintain the fuel temperature sensor and its wiring.
  
• Ensure proper fuel quality and avoid extreme temperatures.
  
• Use Clue to monitor fuel system data in real-time and receive early alerts.