Jungheinrich Eje 120 Error Code 4372 Work Work Here

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Primary Causes of Code 4372

Through field diagnostics and service manuals, the root causes usually fall into four categories: jungheinrich eje 120 error code 4372 work

Section 3: Primary Causes of Error Code 4372

To perform the correct "work," you must identify the root cause. Code 4372 is rarely a sensor failure; it is usually a power delivery problem. Below are the six most common causes: This content is structured for use in a

✅ Typical Fixes Reported in Workshops

| Cause | Fix | |-------|-----| | Moisture in motor encoder connector | Clean, apply dielectric grease, reseal | | Broken encoder cable inside motor | Replace motor harness or complete drive motor | | Loose pin in controller connector | Re-pin or replace controller housing | | Controller output stage damaged | Replace travel controller (programming required) | Primary Causes of Code 4372 Through field diagnostics

Step 4: Measure Lift Motor Current (Clamp Meter)

  1. Put the DC clamp meter around the positive cable going to the lift pump motor.
  2. Reconnect the battery and turn on the truck.
  3. Press lift.
    • Normal inrush current: 80-120A for 0.5 seconds, then settling to 50-70A.
    • If current is >150A and voltage crashes: Motor windings may be shorted.
    • If current is <30A and voltage crashes: High resistance somewhere (contactor or ground).

4. Faulty Lift Contactor (Main Hydraulic Relay)

The contactor that sends power from the battery to the lift pump motor can have pitted or welded contacts. A high-resistance contactor will pass enough voltage for diagnostics, but under load (lifting), the voltage collapses.