This error suggests you should connect the Pathfinder to engine (different cable).

You can eliminate the fan motor valve failure simply unplugging the cable from it. The engine and truck should start normally working (and on the display appeares the error 158).

Is the "lightning" lamp on the display on?

Anyway - connect the Pathfinder with Diesel Diagnostic cable.

Safety processor recognises a mismatch of the feedback signal "output PWM to engine actuators"

The controller detects one or more feedback signals from the combustion engine actuators deviate from required values.

Check fuel pump actuators, fan valve etc.. would be necessary to check faults and measuring blocks in engine controller.

Regards