Possible causes include:
Faulty steering angle sensor: Inspect the sensor for damaged wiring, or loose connections if damaged replace. Problem with wiring system: Loose cables and connectors cause electrical interferences within the circuit due to poor contact. Inspect, reattach any connectors securely or repair as necessary
Control Circuit Problem: There might be issues from the Power steering sensor control unit. inspect all relevant fuses and relays or the control unit
*Note to contact your local dealership is the problem persist. Do Not tamper with components you might risk voiding the forklift warranty*