What is MID 138 & How to Solve It?

What is MID 138:

MID 138 refers to a problem with the Turbocharger Boost Pressure Sensor. This fault indicates that the ECM is receiving an out-of-range signal from the turbocharger boost pressure sensor, potentially affecting the turbocharger system and leading to poor engine performance.

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Why This Happens:

• Faulty turbocharger boost pressure sensor.
  
• Shorted or damaged wiring in the sensor circuit.
  
• Loose or corroded sensor connectors.
  
• Low or high boost pressure due to a malfunctioning turbocharger.
  
• ECM failure to process the sensor’s data.
  
  

How to Fix It:

1. Inspect the turbocharger boost pressure sensor for visible damage or malfunction.
   
2. Test the sensor’s voltage and resistance to ensure it is within specification.
   
3. Check the wiring and connectors for visible damage or corrosion.
   
4. Replace the faulty turbocharger boost pressure sensor if necessary.
   
5. Inspect the turbocharger system for any mechanical issues.
   
   

How to Avoid It Before It Happens:

• Regularly inspect the turbocharger boost pressure sensor and wiring.
  
• Perform routine maintenance on the turbocharger system.
  
• Keep connectors clean and free from corrosion.
  
• Perform diagnostic checks to monitor turbo system health.
  
• Clue’s Equipment Maintenance services help track turbocharger health and provide proactive alerts for sensor-related issues.