PTF 523905.04 – Front PTO Solenoid Valve, Voltage Too Low

PTF 523905.04 (PTF )

Code: 523905.04



This diagnostic trouble code is generated when the PTF control software detects that the voltage in the positive lead of the front PTO solenoid valve is too low. This indicates a short circuit to ground.


When this code is detected, the front PTO may exhibit limited or no functionality.


  • Inspect Solenoid Valve Circuit:
    • Check for a short circuit to ground in the wiring to the front PTO solenoid valve.
    • Repair or replace any damaged or disconnected wires.
  • Test the Solenoid Valve:
    • Verify the functionality of the front PTO solenoid valve using diagnostic tools.
    • Replace the solenoid valve if it is found to be faulty.
  • Check Connectors:
    • Ensure that all connectors are properly seated and free of corrosion.
    • Clean or replace connectors as needed.


Regular inspection and maintenance of the front PTO solenoid valve and its circuit can prevent voltage issues and ensure reliable operation.

Control Units: John Deere

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