To prevent recurring 1901 errors and keep your warehouse running smoothly, add these checks to your regular maintenance:
Preventive maintenance recommendations
Typical parts that may need replacement
Debris, trash, or items on the floorboard are jamming the pedal down.
In simpler terms, the truck's controller detected that your foot was on the accelerator pedal at the moment you turned the key to start the vehicle. The safety logic is designed to prevent an accidental, uncontrolled lunge. The system will fail to start, and Error 1901 will be displayed until the condition is corrected. This is identical to the warning you see on many modern cars that instruct you to "Press Brake to Start," but in this case, for a forklift, it's about ensuring the travel pedal is in a neutral, zero-throttle position before the drive system is energized. Jungheinrich Error Code 1901
According to Jungheinrich's official operating manuals for various models, Error 1901 has a consistent and straightforward definition:
The forklift's central control unit runs a self-test when you turn the key switch or enter a PIN. The truck expects the accelerator pedal to be neutral. If the sensor shows the pedal is pressed, the system triggers code 1901 and disables travel functions. This fail-safe prevents the machine from jumping forward or backward upon startup, protecting operators and racks. Primary Causes of Error Code 1901 To prevent recurring 1901 errors and keep your
: Turn the key switch to the "OFF" position and then back to "ON" (or re-enter your PIN). Check for Obstructions
Inspect the wiring routed from the pedal assembly to the traction controller for pinched, exposed, or shorted wires. The system will fail to start, and Error