If you see this code on your display, try the following steps to resolve it: Release the Pedal
Moisture ingress from wet warehouse floors or pressure washing corrodes the small pins inside the motor connector. Code 1901 often appears after cleaning. Jungheinrich Error Code 1901
The familiar whine of the pump filled the air. Elias tapped the lever, and the forks lowered smoothly. The pallet of pharmaceuticals settled safely onto the floor. If you see this code on your display,
Jungheinrich drive controllers require a stable 24V, 48V, or 80V (depending on model) supply. When battery voltage drops below the controller’s minimum threshold (e.g., 20V on a 24V system), the microcontroller inside the drive controller resets or stops sending CAN messages. 20V on a 24V system)
