what is the number 501 on the obd2 for a jeep grand cherokee

Question

my  1998 jeep has code number of 501 reading on my Canobd2 read out

Answer 1

P0501 Vehicle speed sensor range / performance

 The vehicle speed sensor has a plastic gear that you have to remove the speed sensor to inspect

 Here the speed sensor gear has worn out, this would set a P0501