PTD 523711.02 – Wheel Speed Sensor (Channel 1), Incorrect Speed

PTD 523711.02 (PTD )

Code: 523711.02



This diagnostic trouble code is generated when the control software expects but does not receive the wheel speed signal from channel 1. This code can also be generated if there is a difference of more than 10 km/h (6.2 mph) compared to the wheel speed sensor on channel 2.


When this error is detected, the control software may limit or disable the transmission functions.


Inspect Wheel Speed Sensors:

  • Check the wheel speed sensor on channel 1 for any signs of damage or disconnection.
  • Ensure that the sensor is properly aligned and mounted.

Compare Sensor Readings:

  • Compare the readings from both wheel speed sensors to identify any discrepancies.
  • Replace the sensor on channel 1 if it is providing incorrect readings.

Check Wiring and Connections:

  • Inspect the wiring and connections to the wheel speed sensors for signs of damage, wear, or corrosion.
  • Repair or replace any damaged wires or connectors.

Verify Control Unit:

  • Ensure that the control unit is correctly processing the signals from both wheel speed sensors.
  • Reprogram or update the control unit software if necessary.

Consult Technical Support:

  • If the issue persists, seek assistance from technical support or a qualified technician for further diagnosis and repair.

Monitor System:

  • After repairs, monitor the wheel speed sensors to ensure they are providing accurate and consistent readings.


Regular inspection and maintenance of the wheel speed sensors and their connections can help prevent speed discrepancies and ensure reliable operation of the transmission system.

Control Units: John Deere

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