If you see this code on your display, try the following steps to resolve it: Release the Pedal
When a Jungheinrich forklift is powered on, the system performs a self-test to ensure all safety parameters are met before allowing operation. Error 1901.1 is triggered if the controller detects that the accelerator (drive) pedal is already depressed or sending a signal when the key switch is turned on. Common causes include: Operator Error Jungheinrich Error Code 1901
In plain English: The main traction control unit (typically the SEM or ELV controller) has detected an electrical signal from the drive motor’s temperature sensor that is either out of range or contradictory to expected values. If you see this code on your display,
This code is part of the "operator error" or "standard event" category (specifically codes ranging from 1 to 50 in some systems). It is triggered by a safety feature designed to prevent the truck from moving unexpectedly as soon as it is switched on. This code is part of the "operator error"