A technician can perform a "Teach-In" to recalibrate the actual values for the direction and travel potentiometers. 3. Component Replacement If calibration fails or the error returns immediately:
Sometimes the error is transient. Turn the truck off and on again to see if the self-test clears the fault. jungheinrich eje 120 error code 4372 top
Inspect the wiring harness that runs through the tiller arm. This area is subject to constant flexing and is a common point for wire fatigue or shorts. 2. Software Calibration (Requires Judit Diagnostic Tool) A technician can perform a "Teach-In" to recalibrate
A mechanical issue causing "backlash" or play that prevents the sensor from returning to a true neutral state. 1. Immediate Restart and Physical Inspection Turn the truck off and on again to
Most modern Jungheinrich trucks require the proprietary Judit Diagnostic Software for a permanent fix.
The controller detects that there is no neutral zone (zero-travel position) for the drive or lift/lower functions. This can be caused by physical wear, electrical drift, or outdated firmware that has a "neutral window" that is too narrow to accommodate normal sensor aging. Secondary Causes: Faulty traction or steering sensors within the tiller head. Damaged or loose wiring in the tiller head harness.
Ensure the tiller handle and all control buttons (butterfly switches) move freely and are not physically stuck or gritty.