AutoCodes – Ford – P0721 2009 Ford Fusion

P0721 2009 Ford Fusion 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 2009 Ford Fusion 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 1,718

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
FAQs
Comments
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Code P0721 2009 Ford Fusion 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 2009 Ford Fusion - Output Shaft Speed Sensor Range/Performance - AutoCodes.com — P0721 2009 Ford Fusion Code - Output Shaft Speed Sensor Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0721 2009 Ford Fusion?

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 2009 Ford Fusion?

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 2009 Ford Fusion 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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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.

Frequently Asked Questions about P0721 2009 Ford Fusion Code

1. What are the common symptoms of OBDII code P0721 on a 2009 Ford Fusion?

The common symptoms of OBDII code P0721 on a 2009 Ford Fusion include issues with shifting gears, erratic speedometer readings, and the transmission going into limp mode.

2. What does the OBDII code P0721 mean for a 2009 Ford Fusion?

OBDII code P0721 for a 2009 Ford Fusion indicates a problem with the Output Shaft Speed Sensor, specifically related to range/performance issues.

3. What are the possible causes of OBDII code P0721 on a 2009 Ford Fusion?

Possible causes of OBDII code P0721 on a 2009 Ford Fusion include a faulty output shaft speed sensor, damaged wiring or connectors, issues with the transmission control module, or internal transmission problems.

4. How can I diagnose the OBDII code P0721 on my 2009 Ford Fusion?

To diagnose OBDII code P0721 on a 2009 Ford Fusion, you can use a scan tool to read the code, inspect the output shaft speed sensor and its wiring for damage, and perform a visual inspection of the transmission components.

5. Can I still drive my 2009 Ford Fusion with OBDII code P0721?

It is not recommended to drive your 2009 Ford Fusion with OBDII code P0721, as it can lead to transmission issues and potential safety hazards. It is best to address the problem promptly.

6. How do I repair OBDII code P0721 on my 2009 Ford Fusion?

The repair for OBDII code P0721 on a 2009 Ford Fusion typically involves replacing the output shaft speed sensor, repairing any damaged wiring or connectors, and resetting the trouble code.

7. Are there any DIY tips for fixing OBDII code P0721 on a 2009 Ford Fusion?

While some may attempt to replace the output shaft speed sensor themselves, it is recommended to consult a professional mechanic for accurate diagnosis and repair of OBDII code P0721 on a 2009 Ford Fusion.

8. How much does it cost to fix OBDII code P0721 on a 2009 Ford Fusion?

The cost to fix OBDII code P0721 on a 2009 Ford Fusion can vary depending on the underlying issue, but it may range from $150 to $400 for parts and labor.

9. Will resetting the OBDII code P0721 on my 2009 Ford Fusion make it go away permanently?

Resetting the OBDII code P0721 on a 2009 Ford Fusion may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause.

10. Can OBDII code P0721 on a 2009 Ford Fusion cause other problems if left unresolved?

If left unresolved, OBDII code P0721 on a 2009 Ford Fusion can cause further damage to the transmission, leading to more severe issues and potentially costly repairs down the line.