Error code 4372 on a Jungheinrich EJE 120 (and related ERE models) typically indicates a Tillerhead Failure. This error usually points to an issue with the traction sensor or the neutral zone calibration in the tiller head. Core Issue: Implausible Tiller Head Sensor
The error is often triggered because the "neutral zone" (the zero travel position) is too narrow or the analogue signal from the tiller head sensor is deemed "implausible" by the controller. This can cause the truck to cut out hydraulic functions. Common Solutions
Firmware/Software Update: This is a known issue for which Jungheinrich released a firmware update. The update expands the "window" for the neutral zone to prevent the error from triggering unnecessarily.
Replace the Tiller Head: If the unit is from older stock or a software update does not resolve the issue, the tiller head may need to be replaced entirely.
Check Wiring & Connectors: Inspect the card inside the tiller unit and the wiring for signs of damage or loose connections.
Clean the Sensor Area: Ensure there is no debris or humidity affecting the sensor's ability to read the neutral position. Troubleshooting Steps
Restart the Truck: In some cases, the error is temporary and will clear after a restart, though it will likely recur if the underlying sensor or software issue is not addressed.
Verify Battery Condition: Ensure the battery is holding a charge under load, as low voltage can sometimes cause erratic sensor readings.
Contact Jungheinrich Service: Because specialized diagnostic tools (like JUDIT) are often required to update the firmware or perform a "Teach-In" calibration for the sensor, professional assistance is frequently necessary. Discussion: Error 4372 - Forums - Forklift Action
Error code 4372 on a Jungheinrich EJE 120 typically points to a tillerhead failure. This is a common issue often caused by a neutral zone that is too narrow, making the truck think it is being activated when it should be stationary. Key Causes and Troubleshooting
Narrow Neutral Zone: The tiller's "window" for the neutral position is too tight. Even a tiny amount of wear or vibration can trigger the fault.
Firmware Issue: Jungheinrich is aware of this common bug and has released firmware updates to expand the neutral zone window. jungheinrich eje 120 error code 4372 work
Sensor Fault: The traction sensor within the drawbar head may be failing or sending implausible signals. Recommended Solutions
Restart the Truck: Sometimes a simple power cycle clears the error temporarily, allowing the truck to work normally for a short period.
Firmware Update: Contact a certified Jungheinrich technician to see if your tillerhead requires a firmware update.
Tillerhead Replacement: If the hardware itself is faulty, the entire tillerhead assembly may need replacement.
Hardware Check: Inspect the tillerhead card and internal wiring for signs of damage, humidity, or loose connections.
Does your truck's error clear immediately after a restart, or does it stay locked in the fault state? Discussion: Error 4372 - Forums - Forklift Action
Can anyone shed any light please as to what could be the fault. Battery is fine and holds up well under load. Thanks in advance. . Forkliftaction Discussion: Error 4372 - Forums - Forklift Action
Can anyone shed any light please as to what could be the fault. Battery is fine and holds up well under load. Thanks in advance. . Forkliftaction Discussion: error code 4372 - Forums - Forklift Action
Jungheinrich EJE 120 , error code identifies an analogue tiller head sensor issue where the signal is deemed "implausible"
. This typically occurs when the truck's control system cannot detect a clear "neutral" or zero-travel position for the drive or lift/lower functions. Meaning of Error 4372
The error is triggered when the sensors in the tiller head (responsible for acceleration and hydraulic commands) send signals that fall outside of expected voltage ranges or logic. Error code 4372 on a Jungheinrich EJE 120
: The "neutral zone" window for the sensors is too narrow, or the sensor itself is failing to return to a true zero point.
: The truck may experience travel malfunctions, though in some cases, hydraulics may continue to work regardless of the tiller position. Troubleshooting and Workarounds To address error 4372, follow these service steps: Check for Firmware Updates
: Jungheinrich is aware of this common issue and provides a firmware update for the tiller head. This update expands the "neutral window," allowing for more tolerance in the sensor's resting position. Inspect Tiller Head Hardware
Check for mechanical backlash or wear in the tiller arm and "hairpin" components. Examine the tiller head card
(electronics) for signs of damage or moisture, although the fault is more frequently software-related. Verify the sensor power supply
; if it is outside the 10V–16V range, it can trigger implausible signal errors. Perform a Teach-In
: If the hardware is intact, a "teach-in" or calibration procedure may be required to reset the sensor's travel stop and neutral points. Wiring and Connections
: Inspect the wiring harness between the tiller head and the main controller for breakage or loose connections. cdn.prod.website-files.com If these steps do not clear the code, the signal-evaluating controller
or the tiller arm sensor unit itself may need replacement. For further technical assistance, you can consult the official Jungheinrich Service Portal with your vehicle's serial and order numbers. Machineseeker Blog - procedure for this specific model? Discussion: Error 4372 - Forums - Forklift Action 21 Mar 2022 —
Error code 4372 on a Jungheinrich EJE 120 refers to a tiller head sensor failure, specifically indicating that the "analogue signal is implausible". This common fault typically means the control unit is receiving conflicting or out-of-range signals from the traction (butterfly) sensor. Core Cause: Neutral Zone Issues
The error most frequently occurs when the "neutral zone" for the drive or lift/lower functions is too narrow or non-existent. Section 4: Tools Required for Diagnosis Before you
Firmware Bug: Many units from certain production periods had a firmware bug where the software "window" for the neutral position was too small to account for minor sensor drift.
Sensor Mismatch: The error triggers when there is a mismatch between the two redundant signals sent by the butterfly sensor in the tiller head. Recommended Fixes
If you encounter this code, troubleshooting should follow these steps:
Firmware Update: Jungheinrich is aware of this common issue and released a software update for the tiller head to expand the neutral zone "window". A service technician with the JH diagnostic tool may be required to apply this fix.
Environmental Check: High humidity can sometimes interfere with the tiller head electronics. Some technicians suggest removing the upper steering card and letting it dry in a warm, dry area for 2–3 days.
Component Replacement: If firmware updates do not resolve the issue, the internal print card (circuit board) or the entire tiller head assembly may need to be replaced.
Wiring Inspection: Ensure there is no physical damage to the harness connecting the tiller head to the main controller, as frayed wires can cause "implausible" signal errors. Immediate Workaround
In some cases, the error is intermittent. Users have reported that restarting the truck (switching it off and on) may temporarily clear the code and allow for normal operation until the next signal mismatch occurs. Discussion: Error 4372 - Forums - Forklift Action
Before you start working on the EJE 120, gather the following:
The EJE 120 typically uses a 24V lead-acid or lithium-ion battery. If the battery voltage drops below 20V under load (lifting), the controller triggers code 4372. A battery with a dead cell will show good resting voltage (e.g., 24.5V) but collapse to 18V under load.
