If you see similar numbers, they often relate to other "startup safety" checks:
When battery voltage drops below 18V (on a 24V system) during a high-demand steering maneuver, the sensor’s supply voltage dips momentarily. The control unit interprets this as a sensor failure, storing Error 1901. Jungheinrich Error Code 1901
Check for dirt, stones, or plastic wrap stuck in the pedal assembly. If you see similar numbers, they often relate
This only works for soft faults. If the hardware issue remains, Code 1901 will reappear within 30 seconds. If you see similar numbers