Description:

This error code, EPC 000190.19, is generated when the ECU cannot determine the engine speed and therefore cannot provide the CAN BUS with any data. A transmitted replacement value generates this diagnostic trouble code in the EPC. In its active state, this fault also generates a diagnostic trouble code at the ECU, which takes priority.

Reaction:

When this error is detected, the control system may not accurately control engine-related functions, leading to potential issues with engine performance and operation.

Recommendations:

Verify CAN BUS Communication:

• Check the CAN BUS wiring and connections for any signs of damage, loose connections, or corrosion. Ensure the integrity of the signal transmission.

Test ECU Functionality:

• Use diagnostic tools to test the ECU and ensure it is correctly determining and transmitting the engine speed data. Update or reflash the ECU software if necessary.

Inspect Engine Speed Sensor:

• Check the condition and functionality of the engine speed sensor. Replace if it is found to be faulty.

Monitor Signal Transmission:

• Ensure that the ECU is transmitting accurate engine speed data to the CAN BUS. Use diagnostic tools to verify the signal.

Reset and Test System:

• After addressing the issues, reset the system and monitor the engine speed signal to ensure it is being accurately transmitted and received.

Note:

Reliable CAN BUS communication and a properly functioning ECU are essential for accurate engine speed data transmission. Regular inspections and updates can help prevent such issues. If the problem persists, further diagnostics may be necessary to identify and resolve deeper issues.