What is MID 101:
MID 101 refers to an issue with the Crankshaft Position Sensor Circuit. The ECM has detected a problem with the sensor’s signal, which may affect engine timing and lead to misfires, stalling, or difficulty starting the engine.
Why This Happens:
- Faulty crankshaft position sensor.
- Damaged or shorted wiring in the sensor circuit.
- Loose or corroded sensor connectors.
- ECM failure to process the sensor’s data correctly.
- Mechanical issues affecting sensor readings.
How to Fix It:
- Inspect the crankshaft position sensor for visible damage or malfunction.
- Check wiring and connectors for damage or corrosion.
- Test the sensor’s voltage and resistance to verify proper functionality.
- Replace the faulty crankshaft position sensor if necessary.
- Ensure the ECM is receiving the correct data from the sensor.
How to Avoid It Before It Happens:
- Regularly inspect the crankshaft position sensor and wiring.
- Keep connectors clean and free from corrosion.
- Perform routine diagnostic checks to monitor sensor performance.
- Verify that the ECM is interpreting the sensor’s data correctly.
- Clue’s Equipment Maintenance services track crankshaft sensor performance to prevent engine timing issues before they affect operation.
