What is SPN 3031 FMI 9
- SPN 3031: Refers to a fault related to the fuel level sensor, indicating that the fuel level reading is outside the normal range.
- FMI 9: Indicates that the sensor has provided an invalid signal or the data from the sensor is out of range.
Together, SPN 3031 FMI 9 signals an issue with the fuel level sensor, which could affect the fuel system and cause inaccurate fuel readings.
Why It Happened
This fault code is typically caused by:
- A faulty or malfunctioning fuel level sensor.
- Wiring issues or poor connections between the sensor and ECM.
- Contamination in the fuel tank affecting sensor readings.
- A failure in the ECM processing the sensor data.
How to Resolve It
To resolve SPN 3031 FMI 9:
- Inspect the fuel level sensor and wiring for damage or wear.
- Clean or replace the fuel level sensor if necessary.
- Check for contaminants in the fuel tank that may be affecting the sensor’s performance.
- After repairs, clear the fault code and restart the engine to confirm the fix.
How to Avoid Before It Happens
To prevent SPN 3031 FMI 9:
- Regularly inspect the fuel system and sensor.
- Ensure the fuel tank is clean and free from contamination.
- Monitor fuel system data using Clue for early detection of sensor faults.
