Jeep Repair: Speed & Odometer, vehicle speed sensor, signal circuit

Question
QUESTION: 2005 Jeep Liberty, service engine light came on and both the speedometer %26 odometer are not working. Engine seems to run fine, sounds normal. Fuses are ok. I read previous Q%26A titled "Speed Sensor" on 10/08/2008. Your answer, 1st time you heard of problem. I think I might have the same problem. Please advise, thank you Kevin.

ANSWER: get the codes first that will help out in the matter

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QUESTION: Code: P0501
other issues I noticed: No chime for fasten seatbelt. Doors do not automatically lock when start driving.

Answer
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
(B22) VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO VOLTAGE
(B22) VEHICLE SPEED SIGNAL CIRCUIT OPEN
(B22) VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO GROUND
VEHICLE SPEED SENSOR SUPPLY CIRCUIT OPEN
VEHICLE SPEED SENSOR SUPPLY CIRCUIT SHORTED TO GROUND
(B12) VEHICLE SPEED SIGNAL CIRCUIT OPEN
WHEEL SPEED SENSOR SIGNAL CIRCUIT INOPERATIVE
(B12) VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO GROUND
PCM