Description:

This diagnostic trouble code indicates that the ECU did not receive a CAN message from source address 1. This can affect the proper communication and coordination between the ECU and other control units or sensors.

Reaction:

The ECU may limit or adjust the operation of the engine or related systems to manage the communication error, potentially resulting in reduced performance and efficiency.

Recommendations:

• Inspect CAN Bus Wiring and Connections: Check for damaged, frayed, or loose wiring and connectors associated with the CAN Bus and source address 1. Repair or replace as necessary.
• Test CAN Bus Communication: Use diagnostic tools to test the CAN Bus communication between the ECU and source address 1. Ensure that there are no interruptions or data transfer issues.
• Check for Loose Connections: Verify that all connections related to source address 1 are secure and free of corrosion.
• Verify Source Address 1 Function: Ensure that the control unit or sensor associated with source address 1 is functioning correctly and able to send CAN messages.
• Reset ECU and Monitor System: After resolving the issue, reset the ECU to clear the fault code and monitor the system to ensure normal operation.

Note:

Maintaining proper communication between the ECU and other control units or sensors via the CAN Bus is crucial for accurate engine monitoring and control. Regular inspections and timely maintenance can help prevent communication-related issues.