A qualified technician should use a Jungheinrich diagnostic tool to check the "pedal value" in the controller. If the value is not at zero when the pedal is idle, the potentiometer needs adjustment or replacement. 4. Controller Reset Sometimes the error code is "latched" in the memory.
This code is a key part of the truck's built-in safety system. It ensures the truck does not move unintentionally when the power is turned on, protecting both the operator and surrounding equipment.
Based on manufacturer documentation, (often appearing specifically as 1901.1 or related variants) generally indicates a Drive Pedal Activation During Startup .
If the steps above do not resolve the error, the potentiometer may need to be replaced. If you require further assistance or authorized service, you can reach out to at 0800 357 457 or locate a dealer in North America at Logisnext Americas . Jungheinrich Error Code 1901
Check underneath and around the accelerator pedal for anything blocking it from returning to the home position.
: Drive pedal activated while the parking brake is still engaged.
The temperature in the aisle felt like it dropped another five degrees. If the pharmaceuticals stayed up there in the ambient air for another twenty minutes, they would be compromised. Thousands of dollars in losses. A qualified technician should use a Jungheinrich diagnostic
: The most common cause is the operator having their foot on the drive pedal while turning the key or entering their PIN.
If the error persists after recycling the power without touching the pedal, follow these diagnostic steps:
Seat belt or belt lock not closed when the pedal is pressed. Controller Reset Sometimes the error code is "latched"
If the simple restart doesn't work, you may be looking at a more technical problem:
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: Short circuits, open lines, or corroded pins between the travel setpoint device and the main computer controller. Step-by-Step Troubleshooting Checklist 1. Clear the Operator Interface
If the error persists, the pedal might be physically obstructed.
Does the code disappear if you on the pedal?
