What is SPN 2003 & How to Solve It?

What is SPN 2003

SPN 2003: Refers to a fault related to the intake manifold temperature sensor, which monitors the temperature of the intake air.

When SPN 2003 is triggered, it indicates that the ECM is receiving incorrect or out-of-range data from the intake manifold temperature sensor, potentially leading to engine performance issues.

Why It Happened

This fault code is typically caused by:

• A faulty intake manifold temperature sensor.
  
• Loose or damaged wiring between the sensor and ECM.
  
• Contamination or corrosion in the sensor or its connectors.
  
• A failure in the intake air system affecting the sensor's readings.
  
  

How to Resolve It

To resolve SPN 2003:

1. Inspect the intake manifold temperature sensor for damage or wear and replace it if faulty.
   
2. Check the wiring and connections for any signs of damage or corrosion.
   
3. Test the sensor to ensure it is working properly.
   
4. After repairs, clear the fault code and restart the engine to verify the fix.
   
   

How to Avoid Before It Happens

To prevent SPN 2003:

• Regularly inspect the intake manifold system and sensors.
  
• Ensure the air intake system is free from debris and contamination.
  
• Monitor sensor performance using tools like Clue to get early alerts.