Output Speed Sensor Circuit Range/Performance
2014-2014 Lincoln MKX 3.7L V6
The 2014 Lincoln MKX is equipped with a 3.7L V6 engine. Below you'll find detailed p0721 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Output speed sensor signal out of range.
Symptoms
- Erratic speedometer
- Shift problems
Common Causes
- Sensor fault
- Tone ring issue
Diagnostic Steps
- Compare to wheel speed signals
- Test sensor
Repair Notes
Replace sensor.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P0721 on Other Vehicles
Lincoln Aviator
2003-2003 4.6L V8 DOHC
Lincoln Aviator
2004-2004 4.6L V8 DOHC
Lincoln Aviator
2005-2005 4.6L V8 DOHC
Lincoln Aviator
2020-2020 3.0L Twin-Turbo V6
Lincoln Aviator
2020-2020 3.0L V6 Twin Turbo
Lincoln Aviator
2020-2020 3.0L V6 Twin Turbo Hybrid
Lincoln Aviator
2021-2021 3.0L Twin-Turbo V6
Lincoln Aviator
2021-2021 3.0L V6 Twin Turbo
Common Questions
What does code P0721 mean on a 2014-2014 Lincoln MKX?
P0721 stands for "Output Speed Sensor Circuit Range/Performance". Output speed sensor signal out of range.
What are the symptoms of P0721 on a Lincoln MKX?
Common symptoms of P0721 include: Erratic speedometer, Shift problems.
What causes P0721 on a 2014-2014 Lincoln MKX?
Common causes of P0721 include: Sensor fault, Tone ring issue.
Last updated: March 2026