Description:

This error code, SCO 000084.19, is generated when the transmission output speed signal cannot be determined and provided on the CAN Bus by the PTA control software (AutoPowr™/IVT™ transmission), PTQ control software (PowrQuad™ transmission), or PTD control software (DirectDrive transmission). When this occurs, a replacement value is transmitted, generating this diagnostic trouble code. In its active state, this fault can also trigger a diagnostic trouble code in the PTA, PTQ, or PTD control software, which will take priority.

Reaction:

When this fault is detected, the control software may exhibit limited or no functionality. This can result in compromised performance or complete inoperability of the transmission control system.

Recommendations:

• Inspect Wheel Speed Sensor:
  • Check the wheel speed sensor for any signs of damage, wear, or disconnection. Replace or repair the sensor if necessary.
• Verify Wiring and Connections:
  • Inspect the wiring and connections between the wheel speed sensor and the transmission control unit. Ensure all connections are secure and free of corrosion or damage.
• Check CAN Bus Communication:
  • Ensure the CAN Bus is functioning correctly. Inspect the CAN Bus wiring and connections for any issues. Repair or replace as needed.
• Update Control Software:
  • Verify that the PTA, PTQ, and PTD control software are up-to-date. Update the software to the latest version if necessary.
• Consult Technical Support:
  • If the issue persists, consult technical support or the manufacturer for further assistance. They may provide additional diagnostics or solutions specific to the equipment model.

Note:

• Priority of Diagnostic Codes:
  • Be aware that this fault code may trigger other higher priority diagnostic codes in the control software. Addressing those codes may resolve the issue with the wheel speed sensor.
• Environmental and Operational Conditions:
  • Extreme environmental conditions or heavy-duty operational conditions can affect the wheel speed sensor’s performance. Ensure the equipment is operated within recommended parameters.