Description:

This error code, EPC 000190.08, indicates that the EPC receives an incorrect engine speed signal from the ECU. This can happen if:

• The EPC receives an engine speed signal between 2 and 299 rpm from the ECU for three seconds via the direct line (lead 6101).
• The EPC cannot receive the engine speed signal via the CAN BUS or the direct line for more than three seconds.

This issue can also be caused by the engine stalling.

Reaction:

When this error is detected, the control system may not accurately control engine-related functions, potentially leading to poor performance or unexpected behavior.

Recommendations:

Inspect Engine Speed Sensor:

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

Verify Wiring and Connections:

• Inspect the wiring and connections between the ECU, engine speed sensor, and the CAN BUS. Ensure there are no loose connections, damaged wires, or signs of corrosion.

Check for Engine Stalling:

• Determine if the engine is stalling and address any underlying issues causing the stalling.

Test Signal Integrity:

• Use diagnostic tools to monitor the engine speed signal being transmitted. Ensure it is within the expected range and not experiencing interruptions.

Reset and Test System:

• After addressing the issues, reset the system and monitor the engine speed signal to ensure it is accurate and stable.

Note:

Regular checks and maintenance of the engine speed sensor, wiring, and connections are crucial for accurate engine speed data transmission and reliable engine performance.