What is FMI 6 & How to Solve It?

What is FMI 6:

FMI 6 refers to Excessive Voltage Detected in Sensor Circuit. The ECM detects that the sensor’s voltage is too high, which could lead to faulty readings and potentially damage sensitive components.

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Why This Happens:

• Faulty sensor sending incorrect data.
  
• Damaged wiring causing voltage spikes.
  
• Power supply issues affecting the sensor’s voltage regulation.
  
• Short circuits or loose connections in the sensor wiring.
  
  

How to Fix It:

1. Inspect the sensor and wiring for visible damage or malfunction.
   
2. Test the sensor to verify its voltage output is within specifications.
   
3. Check wiring and connectors for short circuits or damage.
   
4. Replace the faulty sensor or components as necessary.
   
5. Reset the diagnostic code and ensure that the issue is cleared.
   
   

How to Avoid It Before It Happens:

• Perform regular voltage checks during maintenance.
  
• Keep wiring and connectors clean, free of corrosion, and properly secured.
  
• Monitor sensor health and update software to avoid excessive voltage conditions.
  
• Clue’s reporting & analytics tools track sensor voltage and flag any discrepancies before they affect system performance.