Description:

This code indicates that the coolant temperature data is either missing or has an abnormal update rate over the CAN network. This could be due to communication issues within the network or a problem with the sensor.

Reaction:

The engine control system may not receive timely or accurate temperature data, which could affect engine performance and trigger a warning on the dashboard.

Recommendations:

• Inspect CAN Network Wiring:
  • Check the CAN network wiring for signs of damage or loose connections.
  • Ensure all connectors are properly seated.
• Test Coolant Temperature Sensor:
  • Verify that the sensor is functioning correctly and transmitting data at the correct rate.
  • Replace the sensor if it is faulty.
• Check ECU and Network Modules:
  • Ensure the ECU and other network modules are functioning correctly.
  • Update software and firmware to the latest versions.
• Verify Data Integrity:
  • Use diagnostic tools to check the integrity and update rate of data being transmitted over the CAN network.

Note:

Maintaining a healthy CAN network and ensuring all components are functioning correctly can help prevent issues with data transmission rates.