yes they both indicate a fault in the motor circuit but the 30 is for the pump motor not the drive motors.

with these random motor faults coming up i would pay close attention to the battery condition and also if it is bleeding voltage to the frame of the truck. Also check the cables running through the frame under the battery. They are known for corrosion issues if not kept clean, the corrosion eats away at the cables and eventually causes issues like this.