AutoCodes – Ford – P0721 Ford

P0721 Ford Code - Output Shaft Speed Sensor Range/Performance

Quick Answer

The Output Shaft Speed (OSS) Sensor provides the Powertrain Control Module (PCM) with information about the rotational speed of an output shaft. Common causes include Faulty Output Speed Sensor (OSS), Output Speed Sensor harness is open or shorted, Output Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0721 Ford indicates Output Shaft Speed Sensor Range/Performance.
Common causes: Common causes include Faulty Output Speed Sensor (OSS), Output Speed Sensor harness is open or shorted, Output Speed Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 25,207

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0721 Ford Description

The Output Shaft Speed (OSS) Sensor provides the Powertrain Control Module (PCM) with information about the rotational speed of an output shaft. The PCM uses the information to control and diagnose powertrain behavior. In some applications, the sensor is also used as the source of vehicle speed. The sensor may be physically located in different places on the vehicle, depending upon the specific application. The design of each speed sensor is unique and depends on which powertrain control feature uses the information that is generated. The Diagnostic Trouble Code (DTC) will set if the PCM detects an OSS sensor out of range circuit.

OBDII Code P0721 Ford - Output Shaft Speed Sensor Range/Performance - AutoCodes.com — P0721 Ford Code - Output Shaft Speed Sensor Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0721 Ford?

Faulty Output Speed Sensor (OSS)
Output Speed Sensor harness is open or shorted
Output Speed Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0721 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0721 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Ford Models

P0721 1997 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 1998 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 1999 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 2000 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 2001 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 2002 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 2003 Ford F150 — Output Shaft Speed Sensor Range/Performance
P0721 2006 Ford Fusion — Output Shaft Speed Sensor Range/Performance
P0721 2007 Ford Fusion — Output Shaft Speed Sensor Range/Performance
P0721 2008 Ford Fusion — Output Shaft Speed Sensor Range/Performance
P0721 2009 Ford Fusion — Output Shaft Speed Sensor Range/Performance
P0721 2010 Ford Fusion — Output Shaft Speed Sensor Range/Performance
P0721 2011 Ford Fusion — Output Shaft Speed Sensor Range/Performance
P0721 2012 Ford Fusion — Output Shaft Speed Sensor Range/Performance

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.