What is MID 47 & How to Solve It?

What is MID 47:

MID 47 refers to a problem with the Engine Coolant Temperature Sensor. The ECM detects an out-of-range signal from the coolant temperature sensor, which can cause engine overheating or poor engine performance.

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Why This Happens:

• Faulty coolant temperature sensor.
  
• Shorted or damaged wiring in the sensor circuit.
  
• Loose or corroded sensor connectors.
  
• Low coolant levels causing inaccurate readings.
  
• ECM misinterpretation of the sensor’s signal.
  
  

How to Fix It:

1. Inspect the engine coolant temperature sensor for damage.
   
2. Test the sensor’s voltage and resistance to verify it’s functioning properly.
   
3. Check wiring and connectors for visible damage or corrosion.
   
4. Replace the faulty sensor if necessary.
   
5. Ensure the cooling system is working properly and coolant levels are maintained.
   
   

How to Avoid It Before It Happens:

• Regularly inspect the coolant temperature sensor and wiring.
  
• Perform routine coolant system maintenance.
  
• Keep connectors clean and corrosion-free.
  
• Maintain proper coolant levels and monitor the cooling system.
  
• Clue’s Equipment Maintenance services track coolant systems and sensors to prevent overheating and ensure engine efficiency.