RPM 521935.05 – Range A Solenoid Current Too Low

RPM 521935.05 (RPM )

Code: 521935.05



This diagnostic trouble code is generated if the control software detects that the current value at the Range A solenoid is too low. This may indicate an open circuit.


When this error is detected, the transmission may experience limited or no function.


  • Inspect Solenoid Wiring:
    • Check the wiring and connections to the Range A solenoid for signs of damage or open circuits. Repair or replace any compromised wiring.
  • Test Solenoid:
    • Test the Range A solenoid to ensure it is functioning correctly and drawing the proper current. Replace any faulty solenoid components.
  • Verify Power Supply:
    • Ensure the power supply to the solenoid is stable and within the specified range. Inspect for any issues that could cause a drop in current.
  • Check Control Unit:
    • Inspect the control unit for any faults or malfunctions that could affect the solenoid current. Update the control unit software if necessary.
  • Consult Technical Support:
    • If the error persists, consult John Deere technical support or a certified technician for further diagnosis and resolution.


Maintaining the solenoid and its wiring is crucial for the proper function of the transmission. Regular inspections and timely repairs can prevent open circuit issues.

Control Units: John Deere

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