Error Code 1901 [top] | Jungheinrich

While the most frequent cause is simple operator habits, hardware failures can also cause the system to falsely detect an active pedal.

: Drive pedal activated while the parking brake is still engaged.

What is the of your Jungheinrich forklift (e.g., ERE, EFG, EJC)? Jungheinrich Error Code 1901

The accelerator potentiometer is faulty or out of calibration. Faulty wiring in the pedal assembly. Troubleshooting and Solutions for Error 1901

Look for any obvious signs of electrical issues, such as damaged wires or faulty connectors. While the most frequent cause is simple operator

If the error persists even when your foot is off the pedal, there may be a technical issue:

The accelerator pedal position is measured by a sensor, typically a Hall effect sensor (non-contact, using magnetic fields) or a potentiometer. Over time, dirt, moisture, or grime can block the pedal mechanism, preventing it from fully returning to its neutral "zero" position. This results in a constant signal being sent to the controller, triggering the error upon startup. The accelerator potentiometer is faulty or out of

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.

Before digging into wires, attempt a software reset.

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