A internal fault in the controller could cause this code also.

Thank you for your answer. The driver of the pump has been repaired. Is this an error that only about CAN line of controllers or controllers?

This code indicates a loss of communication between the system manager and the pump controller through the canbus. check your connectors at the VSM and the hydraulic controller. The wires you need to check are the green/ yellow twisted pair. There could be a failure in one of the controllers also. If you are not familiar with checking the canbus loop in the truck you will probably need to get a copy of the diagnostic manual.