If you have confirmed good voltage, clean connectors, and intact wires, the internal PCB is faulty. Jungheinrich does not sell individual components (like the e-stop or throttle sensor) separately for the EJE 120 "Top" module; you must purchase the entire upper control assembly.

OEM Part Number Reference (confirm with your serial number):

Replacement Procedure:

If you are reading this, chances are your Jungheinrich EJE 120 electric pallet jack has suddenly stopped working, the hydraulic pump has cut out, and the display is flashing a cryptic number: 4372.

In the world of warehouse logistics, a downed pallet jack brings operations to a grinding halt. Error code 4372 is a common issue on Jungheinrich trucks from the EJE 118/120/120i series. While it sounds technical, the root cause is usually mechanical and relatively straightforward to fix.

Here is everything you need to know about Error 4372, what it means, and how to get your truck moving again.

On the Jungheinrich EJE 120 series, Error 4372 typically points to a speed sensor (encoder) signal error or a motor feedback fault.

Specifically, the truck’s control unit (ELC) is not receiving a plausible signal from the drive motor’s rotational speed sensor. Because the controller cannot verify how fast the motor is spinning, it triggers a safety response:

Likely meaning

Safety first