Description:

This error code, SCO 000190.19, indicates that the engine speed cannot be determined and provided on the CAN Bus by the ECU control software. A replacement value is transmitted, generating this diagnostic trouble code. In its active state, this fault can also trigger a higher-priority diagnostic trouble code in the ECU control software.

Reaction:

When this fault is detected, the control software will have limited or no return-to-position function.

Recommendations:

• Inspect Engine Speed Sensor:
  • Check the engine speed sensor for any signs of damage or malfunction. Replace the sensor if necessary.
• Verify Wiring and Connections:
  • Inspect the wiring and connections between the engine speed sensor and the ECU. Ensure all connections are secure and free of damage or corrosion.
• Update ECU Control Software:
  • Verify that the ECU control software is up-to-date. Update the software to the latest version if necessary.
• Test CAN Bus Communication:
  • Ensure that the CAN Bus is functioning correctly. Inspect and repair any issues found in the network.

Note:

• Priority of Diagnostic Codes:
  • Address higher-priority diagnostic codes triggered by this fault first, as resolving them may also resolve the engine speed sensor issue.