johndeere 850c problem

[han2542]

i have a jd 850c machine with fault code F 617 can any one help me understand what that is i have the code and what it means
Motor PCP Coil Shorted Mistracking See the technical manual or your
Internal Linkage, Motor authorized dealer
Adjustment, Motor (PCP)
Supply Pressure Low
but need help to know where to look to see if i can help fix the machine any help would be great thanks in advance

[ukge4122]

Look at the track motors. Check the both of them, as they would have a speed sensor on either side.
Is the machine tracking more on one side, if this is the case, change both track motor speed sensors.