PTA 524107.05 – Proportional Solenoid Valve 2 for Hydrostatic Unit, Current Too Low

PTA 524107.05 (PTA )

Code: 524107.05



This diagnostic trouble code is generated when the PTA control software registers a current value at the proportional solenoid valve 2 that does not correspond with the commanded working position of the hydrostatic unit. This indicates that the circuit of the proportional solenoid valve 2 is open. If diagnostic trouble code PTA 524108.05 is also stored, a general problem with the supply voltage (VPS1) of proportional solenoid valves 1 and 2 is indicated.


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 open connections or breaks.
  • Repair any identified issues in the circuit.

Test Proportional Solenoid Valve:

  • Measure the current flow to the solenoid valve using a multimeter.
  • Replace the solenoid valve if it is not drawing the correct current.

Examine Wiring and Connectors:

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

Ensure Proper Grounding:

  • Verify that the solenoid valve circuit is properly grounded.
  • Correct any grounding issues that may be causing low current flow.

Check Supply Voltage (VPS1):

  • If diagnostic trouble code PTA 524108.05 is also stored, investigate the supply voltage (VPS1) for issues.
  • Ensure VPS1 is providing stable voltage to both solenoid valves.


Low current 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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