What is SPN 1326 FMI 31
- SPN 1326: Refers to a fault in the exhaust gas recirculation (EGR) temperature sensor.
- FMI 31: Indicates that the sensor is failing to send valid data, meaning the ECM is not receiving proper temperature readings from the sensor.
Together, SPN 1326 FMI 31 signals a problem with the EGR temperature sensor, which could affect emissions control and engine performance.
Why It Happened
This fault code is typically caused by:
- A malfunctioning or faulty EGR temperature sensor.
- Loose or damaged wiring between the sensor and ECM.
- Contamination or corrosion in the sensor or connectors.
- A failure in the EGR system, such as improper flow or temperature regulation.
How to Resolve It
To resolve SPN 1326 FMI 31:
- Inspect the EGR temperature sensor for faults and replace it if necessary.
- Check the wiring and connectors for any signs of damage, corrosion, or loose connections.
- Inspect the EGR system for blockages or issues affecting temperature readings.
- Clear the fault code and restart the engine after the repairs.
How to Avoid Before It Happens
To prevent SPN 1326 FMI 31:
- Regularly inspect the EGR system and sensor for wear or damage.
- Keep the EGR system clean and free from contamination.
- Use Clue to monitor sensor data in real-time and receive alerts for any irregularities.
