Jungheinrich Error Code 1901 __hot__
completely from the drive pedal/accelerator. Turn the key or activate the controller again. Observe the display to see if the code clears. 2. Inspect the Pedal Assembly
Dirt, debris, or debris (like packing material) is lodged under the pedal, physically preventing it from returning to the true neutral position.
When Error 1901 becomes active, the forklift will typically exhibit one or more of the following behaviors:
Let me know which of these troubleshooting steps you'd like to dive into! Share public link Jungheinrich Error Code 1901
Inspect the pedal area for any objects (like small stones or plastic wrap) that might be jamming the mechanism.
* 1901.1 – Drive pedal activated during startup. * 2951.1 – Hydraulic function activated during startup. Machine Maxx USA Jungheinrich Forklift Truck Fault Codes DTC.pdf
Small stones, dirt buildup, or fragments from wooden pallets can lodge beneath or inside the pedal assembly, physically jamming the linkage slightly downward. 3. Electrical Sensor Faults completely from the drive pedal/accelerator
The technician will have the necessary diagnostic tools (like JUDIT or ETM software) to perform more advanced troubleshooting. This may involve:
The pedal potentiometer requires recalibration or replacement.
A damaged wire connecting the pedal sensor to the controller. Step-by-Step Troubleshooting Checklist Share public link Inspect the pedal area for
Warning: This is for moving the truck a few meters onto a trailer or out of an aisle. Do not operate normally. Some older Jungheinrich models (pre-2015) allow a temporary override:
The vast majority of Error 1901 occurrences are simply due to the operator's foot resting on the accelerator pedal while turning the key or pressing the start button. Alternatively, a floor mat or debris could be pressing against the pedal without the operator noticing.
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indicates that the drive pedal was activated during the forklift's startup sequence . This is a built-in safety feature designed to prevent the industrial truck from moving unexpectedly when the key switch or power button is turned on. When the electronic control unit detects a voltage signal from the accelerator pedal sensor before the diagnostic self-test completes, it triggers fault code 1901.1 and immediately inhibits travel to protect the operator and nearby warehouse personnel.