Description:

This error indicates a communication issue between the ECU and the aftertreatment outlet NOx sensor, leading to an inability to receive data. This problem could be due to faults within the CAN Bus system, such as broken wires, poor connections, or faulty CAN Bus hardware.

Reaction:

The system may revert to a default operation mode that assumes standard emission levels, potentially compromising the actual emission control effectiveness.

Recommendations:

• Inspect CAN Bus System: Examine all wiring, connectors, and hardware associated with the CAN Bus for integrity and proper function.
• Test Communication Links: Use diagnostic equipment to test the communication link between the ECU and the NOx sensor to pinpoint the issue.
• Resolve Connectivity Issues: Repair or replace any faulty components within the CAN Bus system to restore proper communication.
• Reset ECU and Re-establish Data Links: After repairs, reset the ECU to ensure it can correctly process incoming data from the NOx sensor.
• Monitor System for Further Issues: Continuously monitor the system to ensure that there are no further communication disruptions.

Note:

Maintaining robust communication pathways is crucial for accurate monitoring and control of emissions. Regular checks can prevent communication failures and ensure ongoing compliance with emission standards.