Thanks Nunanemo.
I had changed the steer controller before.
The trucks at times works very well even for 3 days without displaying any error.
Last week I thought of the same that it could be the steer sensor bearing that is fitted in the steer wheel, I did changed that but still the problem comes back after 3 or five day with the truck working.
When the error occurs we give it like one hour to restart the machine a gain and it works.
Help if you have experienced of the same because I need a permanent solution.
Thanks,
John Juma.