What is FMI 15 & How to Solve It?

What is FMI 15

FMI 15: Refers to a fault indicating that a sensor is reporting data outside the expected range, and the signal received by the Engine Control Module (ECM) is too high. This typically suggests that the sensor is giving a higher-than-normal reading, which could cause improper system operation.

FMI 15 usually occurs when the ECM detects that the data it is receiving from the sensor is unusually high, leading to inaccurate data processing and possible performance issues.

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Why It Happened

This fault code is commonly caused by:

• A malfunctioning or damaged sensor.
  
• A wiring issue or loose connections between the sensor and ECM.
  
• Environmental factors affecting sensor readings, causing abnormally high data signals.
  
• A failure in the ECM processing the data from the sensor.
  
  

How to Resolve It

To resolve FMI 15:

1. Inspect the sensor for any faults or damage and replace it if necessary.
   
2. Check the wiring and connectors for any signs of wear, corrosion, or loose connections.
   
3. Test the system to ensure that the sensor is providing proper readings.
   
4. After repairs, clear the fault code and restart the engine to verify that the issue has been resolved.

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How to Avoid Before It Happens

To prevent FMI 15:

• Regularly inspect sensors, wiring, and connectors for damage or corrosion.
  
• Perform routine maintenance and calibration of sensors to ensure accurate readings.
  
• Use Clue to monitor sensor data and receive real-time alerts for any irregular readings.