What is SPN 94 FMI 17 & How to Solve It?

What is SPN 94 FMI 17:

SPN 94 FMI 17 refers to a high voltage condition in the Engine Oil Pressure Sensor Circuit. The FMI 17 code indicates that the sensor is sending higher than expected voltage readings to the Engine Control Module (ECM). This could be caused by a short circuit, a malfunctioning sensor, or an issue with the wiring, leading to inaccurate oil pressure readings and potential engine damage.

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Why This Happens

• Faulty or malfunctioning oil pressure sensor.
  
• Shorted or damaged wiring in the sensor circuit.
  
• Corroded or loose sensor connectors.
  
• Oil pressure too high due to a malfunctioning oil pump or blockage in the oil lines.
  
• ECM misinterpreting the sensor’s signal.
  
  

How to Fix It

1. Inspect the oil pressure sensor and wiring for visible damage or corrosion.
   
2. Test the sensor’s voltage and resistance readings to ensure they match manufacturer specifications.
   
3. Check the sensor connector for tightness and clean it of any debris or moisture.
   
4. Replace the oil pressure sensor if it is faulty or malfunctioning.
   
5. Inspect the oil system for issues such as high pressure or oil blockages.
   
   

How to Avoid It Before It Happens

• Regularly check oil levels and ensure proper oil flow.
  
• Inspect the oil pressure sensor and wiring during routine maintenance.
  
• Ensure connectors are clean, dry, and securely connected.
  
• Perform diagnostic checks to detect early signs of oil pressure issues.
  

Clue offers preventive maintenance services to monitor oil pressure sensor health and help prevent potential engine issues before they arise.