BCU 001896.31 – Caution: Frequent Rear PTO Speed Preselection Changes. John Deere System Advisory.

BCU 001896.31 (BCU 1896.31)

Code: 001896.31

Shortcode: 1896.31


Error code BCU 001896.31 is an operator information alert generated when there is frequent changing of the preselection of the rear Power Take-Off (PTO) speed on a John Deere vehicle. This advisory is intended to warn the operator that repeatedly changing the PTO speed preselection can lead to wear and potential damage to the PTO system, as well as possible impacts on the attached implements’ performance and efficiency.


The Basic Control Unit (BCU) will not typically alter the machine’s functionality in response to this code but will provide a warning to discourage the operator from continued frequent adjustments, which may be unnecessary and potentially harmful to the PTO system.


  • Monitor PTO Speed Changes: Operators should be advised to plan PTO use carefully and avoid unnecessary changes to the speed settings, which can stress both the tractor and implement systems.
  • Review Operational Procedures: Reevaluate work practices to ensure that PTO speed changes are made deliberately and based on the actual requirements of the task at hand.
  • Check PTO System for Wear: If frequent changes have been a common practice, inspect the PTO system for any signs of unusual wear or damage. Pay particular attention to clutches, the PTO shaft, and connections to implements.
  • Train Operators: Provide training or reminders to operators on the correct use of the PTO, emphasizing the importance of selecting the appropriate speed for the work being performed and sticking with it unless a change is warranted by a change in work conditions or implement.
  • Reset the BCU and Clear Diagnostic Codes: If the advisory was triggered due to an operator’s incorrect handling, reset the BCU to clear the advisory once corrective actions and training have been implemented.
  • Document Practices and Maintenance: Keep records of operational practices and any maintenance performed on the PTO system to help identify potential issues early and adjust training or practices as necessary.


Proper management of PTO speed settings is essential for maximizing the efficiency and longevity of both the tractor and attached implements. Educating operators on the impact of their handling choices and encouraging consistent operational practices can help maintain equipment in good working order and extend its operational life.