Hi Juma,
"Error 47 steel wheel" means the Steering wheel encoder is faulty.
- Please check the steering encoder located under the steering wheel where the driver handles to turn the steering.
- If you have the new one or the same truck you should replace it to test. Otherwise, you should check the wiring from the steering encoder to "the Steering controller" located in front of the driver's knees. If the wirings are all OK this means you will have to order the new setpoint steering encoder.
Good luck
Cheers