Jungheinrich Eje 120 Error Code 4372 Work

If the contactor that sends power to the hydraulic pump motor is stuck closed (welded) or open (coil failure), the controller sees unexpected voltage on the feedback line, triggering code 4372.

If the hardware checks out, connect a Jungheinrich diagnostic laptop. jungheinrich eje 120 error code 4372 work

Before you start working on the EJE 120, gather the following: If the contactor that sends power to the

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Many technicians forget the negative side. The main ground cable from the battery negative to the chassis and controller must be perfect. A bad ground will cause the entire electrical system to behave erratically, often generating phantom error codes like 4372. Many technicians forget the negative side

Many novice technicians see a code 4372 and assume the lift controller is faulty. This is almost never the case. The controller is protecting itself from a real power issue.