BCU 524252.31 – Rear PTO Solenoid Valve (Proportional Solenoid Valve) Fault. John Deere System Advisory.

BCU 524252.31 (BCU )

Code: 524252.31



Diagnostic trouble code BCU 524252.31 is generated when the Basic Control Unit (BCU) detects an open circuit in the solenoid valve circuit for the rear PTO (Power Take-Off), specifically a proportional solenoid valve (Y04/Y81). This open circuit indicates a break or disconnection in the electrical pathway controlling the valve, which can prevent the rear PTO from operating efficiently or at all. The proportional solenoid valve is crucial for modulating the hydraulic flow and pressure to the PTO, affecting its performance and responsiveness.


With this fault detected, the system may prevent engagement of the rear PTO to avoid unpredictable behavior or potential damage. This diagnostic code serves as an alert to the operator that maintenance is required to restore proper functionality.


  • Inspect Wiring and Connectors: Thoroughly check the wiring and electrical connectors associated with the Y04/Y81 solenoid valve. Look for signs of wear, damage, or corrosion that could cause an open circuit.
  • Test Solenoid Valve Operation: Utilize a multimeter to test for continuity and resistance in the solenoid valve circuit. Confirm whether the open circuit condition exists and locate the fault if possible.
  • Replace or Repair Faulty Components: If the solenoid valve or its connections are damaged or malfunctioning, undertake repairs or replace the faulty parts to ensure that the PTO system functions correctly.
  • System Reset and Functionality Test: After addressing the issue, reset any related fault codes and test the rear PTO system to ensure it engages and operates as intended.
  • Routine Maintenance: Incorporate regular checks of the PTO system and its electrical components into your maintenance schedule to detect and mitigate similar issues promptly.


Regular maintenance and immediate attention to diagnostic codes like this are vital in preventing operational downtime and ensuring that agricultural machinery performs optimally. Keeping the PTO system and its components in good working order is crucial for effective machinery operation and can significantly impact productivity.

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