SCO 516454.12 – E-SCV X Not Calibrated

SCO 516454.12 (SCO )

Code: 516454.12



This error code, SCO 516454.12, indicates that the front hitch does not move or moves in the wrong direction during calibration. Proper calibration is necessary for the accurate operation of the selective control valve (E-SCV X).


When this fault is detected, the control software may have limited functionality or may cease to function altogether, resulting in limited or no function of the selective control valve.


  • Verify Calibration Procedure:
    • Ensure that the calibration procedure is being followed correctly. Refer to the manufacturer’s instructions for the correct steps.
  • Inspect Hitch Mechanism:
    • Check the front hitch mechanism for any obstructions or mechanical faults that could be causing incorrect movement. Repair or replace components as necessary.
  • Check Directional Controls:
    • Verify that the directional controls are functioning correctly and are properly configured.
  • Consult Technical Support:
    • If the issue persists, consult technical support for further diagnostics and assistance.


Calibration Accuracy:

  • Accurate calibration is critical for the proper operation of the front hitch and selective control valve. Ensure all conditions are met for successful calibration.

Control Units: John Deere

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