What is CID 143:
CID 143 refers to a problem with the engine control module (ECM) itself. The ECM detects that it has lost communication with a critical sensor or component, which can result in performance degradation, stalling, or failure to start.
Why This Happens:
- Faulty ECM hardware or software.
- Shorted or damaged wiring in the sensor circuits.
- Loose or corroded connectors.
- Interference or power supply issues affecting the ECM.
- ECM failure to process sensor signals.
How to Fix It:
- Inspect the ECM for hardware failure or malfunction.
- Check wiring and connectors for damage or corrosion.
- Test the ECM’s power supply to ensure proper voltage.
- Reprogram or replace the ECM if necessary.
- Perform a full system diagnostic check to ensure all components are communicating.
How to Avoid It Before It Happens:
- Regularly update ECM software.
- Inspect wiring and connectors for damage or wear.
- Perform routine diagnostics to ensure ECM functionality.
- Ensure stable power supply to the ECM.
- Clue’s fleet management software tracks ECM performance to prevent communication issues before they disrupt vehicle operation.
