Error Code 1901 !!hot!! | Jungheinrich

The first step is always to consult the machine's operator manual or technical documentation. Jungheinrich provides detailed guides on error codes, including troubleshooting steps.

is almost always a temperature sensor circuit problem, not a catastrophic motor failure. By following the diagnostic steps outlined above—starting with resistance checks and harness wiggling—you will resolve 90% of cases without replacing the drive motor.

Wait 10 seconds for the internal capacitor batteries to drain.

He walked to the back of the truck and opened the battery compartment cover. The air inside was stale and smelled of ozone. He grabbed his multimeter. Jungheinrich Error Code 1901

If the code persists after a restart and physical inspection, the issue is likely a or a wiring harness failure . These require specialized diagnostic tools to calibrate or replace. You can refer to the Jungheinrich Operating Manuals Database0;4a1; 0;850; for series-specific electrical diagrams. 18;write_to_target_document7;default0;a76;18;write_to_target_document1a;_GxjuaaCCDKeP8L0P1LrdkAo_20;16;

When encountering Error Code 1901 on your Jungheinrich equipment, follow these steps to troubleshoot and potentially resolve the issue:

If the display is clear, the machine is ready for operation. The first step is always to consult the

Regularly sweep and clean the operator cabin. Dust, shrink wrap, and pallet splinters often migrate under the pedals and cause mechanical obstructions.

stands for "Drive pedal activated during startup" .

The Jungheinrich error code 1901 is a common fault signal found in electric pallet jacks and forklifts, particularly within the EJE and ERE series. This error specifically points to a communication or synchronization failure between the tiller (handle) electronics and the main traction controller. When this code appears, the truck will typically enter a safety lockout mode, preventing travel or hydraulic functions to ensure operator safety. Understanding the Technical Cause The air inside was stale and smelled of ozone

In most modern Jungheinrich machines (especially EFG and EJE series), this code signals that a specific control module—usually the —has lost communication with another major component, such as the display interface or a peripheral sensor module.

If you encounter Error 1901, here is what you should do immediately:

Two minutes later, Ray was on his back on the cold concrete. With surgical precision, he cut away the constricting zip ties. He peeled back the insulation, wrapped the frayed wire, and sealed it tight. He didn't have a new connector, so he separated the wire from the chassis, ensuring the signal would flow freely.

* 1901.1 – Drive pedal activated during startup. * 2951.1 – Hydraulic function activated during startup. Machine Maxx USA Jungheinrich Forklift Truck Fault Codes DTC.pdf