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P0721 Diagnostic Trouble Code Discussion for May 2013

Output Shaft Speed Sensor Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0721
Help Request Posted
2006 Ford Mustang 4.0L MIL Lamp on VIN: 1ZVHT80N36
P0721: Output speed senser circuit range malfunction. Vehicle will sometimes have no reverse.the speedometer will bounce around from 20 to 120 mph.the speedometer will act up with engine not running or running and vehicle not moving.only have to have key on.
May 02, 2013