What is FMI 1:
FMI 1 refers to General Sensor Error. The ECM detects that the sensor is not providing a valid or expected signal. This could be due to a wiring issue, sensor failure, or other related problems in the circuit.
Why This Happens:
- Faulty or malfunctioning sensor.
- Damaged or shorted wiring in the sensor circuit.
- Loose or corroded sensor connectors.
- ECM failure to process sensor data.
How to Fix It:
- Inspect the sensor for visible damage or malfunction.
- Check wiring and connectors for any short circuits, damage, or corrosion.
- Test the sensor’s output to verify correct operation.
- Replace the faulty sensor if necessary.
- Clear the fault code after repairs and check for recurring issues.
How to Avoid It Before It Happens:
- Perform routine inspections of sensors and wiring.
- Keep connectors clean and free from corrosion.
- Regularly test sensor output and recalibrate if necessary.
- Clue’s equipment maintenance services track sensor performance and help prevent malfunctions before they impact engine operation.
