PTP 000810.02 – Countershaft Speed Sensor Fault

PTP 000810.02 (PTP 810.02)

Code: 000810.02

Shortcode: 810.02


This error code is triggered when the PTP control unit does not detect countershaft speed for 5 seconds while the engine is running and the transmission is in gear. This indicates a potential issue with the countershaft speed sensor.


No action is taken by the control unit.


  • Inspect Speed Sensor:
    Check the countershaft speed sensor for proper operation. Ensure it is securely mounted and free from damage or debris.
  • Check Wiring and Connections:
    Inspect the wiring and connectors for any signs of damage, loose connections, or corrosion. Repair or replace as necessary.
  • Test Sensor Output:
    Use diagnostic tools to verify that the speed sensor is generating the correct output signals.
  • Consult Technical Support:
    If the issue persists, consult technical support or the manufacturer for further assistance.


A functioning countershaft speed sensor is crucial for accurate transmission control and diagnostics. Regular inspections can help prevent sensor-related issues.

Control Units: John Deere

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