Jungheinrich material handling equipment utilizes a strict "static return to off" safety protocol. The system expects all primary control inputs—such as the drive pedal, steering mechanisms, and hydraulic levers—to be in their neutral positions when the truck boots up. Error Code Primary Component Display Text Trigger Operational Effect Drive Pedal / Travel Setpoint Device Drive pedal activated during startup Travel functions inhibited; system locked. Common Causes of the 1901 Error
Jungheinrich error code 1901, CAN bus timeout, drive controller fault, Jungheinrich troubleshooting, forklift error 1901 reset.
between the accelerator pedal and the distributor/controller for loose studs or damaged wires. Component Replacement Jungheinrich Error Code 1901
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If this resolves the error, the issue was simply an operator oversight. No further action is needed. Common Causes of the 1901 Error Jungheinrich error
Prevent recurrence with these quarterly checks:
Understanding and Troubleshooting Jungheinrich Error Code 1901 This link or copies made by others cannot be deleted
Preventive maintenance recommendations
The pedal potentiometer requires recalibration or replacement.
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