Erratic movement, sudden stop, or complete refusal to drive.
The truck reduces speed to 50% intermittently, even when cold.
Truck accelerates sluggishly, then cuts power and displays code.
Always keep a copy of the official Jungheinrich fault code list near your charging station, and invest in a CanAnalyzer interface if you maintain a fleet of three or more reach trucks. When in doubt, prioritize safety: a truck displaying active error codes should be quarantined until properly diagnosed.