What is CID 98:
CID 98 refers to an issue with the vehicle's cooling system. The ECM detects a fault in the cooling system’s temperature sensor circuit, which could affect engine cooling and lead to overheating, poor performance, or engine damage.
Why This Happens:
- Faulty engine coolant temperature sensor.
- Shorted or damaged wiring in the sensor circuit.
- Low coolant levels affecting sensor readings.
- Loose or corroded sensor connectors.
- ECM failure to interpret the temperature sensor’s data.
How to Fix It:
- Inspect the engine coolant temperature sensor for damage or malfunction.
- Test the sensor’s voltage and resistance to ensure it operates correctly.
- Check wiring and connectors for visible damage or corrosion.
- Replace the faulty sensor if necessary.
- Ensure the cooling system is functioning correctly and coolant levels are maintained.
How to Avoid It Before It Happens:
- Regularly inspect the coolant temperature sensor and wiring.
- Maintain proper coolant levels and inspect for leaks.
- Keep connectors clean and corrosion-free.
- Perform diagnostic checks to monitor temperature sensor performance.
- Clue’s equipment maintenance services help track cooling system health and prevent overheating before it affects engine operation.
