PTA 524108.03 – Proportional Solenoid Valve 1 for Hydrostatic Unit, Voltage Too High

PTA 524108.03 (PTA )

Code: 524108.03



This diagnostic trouble code is generated when the PTA control software registers a voltage value at the proportional solenoid valve 1 that does not correspond with the commanded working position of the hydrostatic unit. This indicates a general problem with the supply voltage (BAT) or that the circuit of proportional solenoid valve 1 is shorted to a positive lead.


Limited or no function of the transmission until the error is corrected, indicating a critical issue with the solenoid valve circuit.


Inspect Solenoid Valve Circuit:

  • Check the circuit for any short circuits to positive leads.
  • Repair any identified issues in the circuit.

Test Proportional Solenoid Valve:

  • Measure the voltage at the solenoid valve using a multimeter.
  • Replace the solenoid valve if it is producing abnormally high voltage readings.

Examine Wiring and Connectors:

  • Inspect all wiring and connectors associated with the solenoid valve for signs of damage or corrosion.
  • Repair or replace any damaged components to ensure proper electrical connections.

Ensure Proper Power Supply:

  • Verify that the solenoid valve is receiving the correct supply voltage.
  • Correct any power supply issues that may be causing high voltage readings.


High voltage readings from the solenoid valve can lead to severe operational problems. Regular inspection and maintenance of the solenoid valve and its circuitry are essential to prevent these issues.

Control Units: John Deere

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