What is MID 86:
MID 86 refers to an issue with the exhaust gas temperature sensor. The ECM detects that the sensor is reporting out-of-range or incorrect values, potentially causing incorrect readings of exhaust temperatures, affecting emission control systems.
Why This Happens:
- Faulty exhaust gas temperature sensor.
- Shorted or damaged wiring in the sensor circuit.
- Loose or corroded sensor connectors.
- Blockages in the exhaust system affecting sensor readings.
- ECM failure to process the sensor’s signal properly.
How to Fix It:
- Inspect the exhaust gas temperature sensor for damage or malfunction.
- Test the sensor’s voltage and resistance to verify proper functionality.
- Check the wiring and connectors for visible damage or corrosion.
- Replace the faulty sensor if necessary.
- Inspect the exhaust system for blockages that might affect the sensor.
How to Avoid It Before It Happens:
- Regularly inspect the exhaust gas temperature sensor and wiring.
- Perform routine exhaust system maintenance to prevent blockages.
- Keep connectors clean and free from corrosion.
- Perform diagnostic checks to monitor sensor performance.
- Clue’s equipment maintenance services monitor exhaust systems to ensure proper temperature regulation and prevent sensor malfunctions.
