AutoCodes – Ford – P0721 2002 Ford F150

P0721 2002 Ford F150 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 2002 Ford F150 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 4,094

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 2002 Ford F150 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 2002 Ford F150 - Output Shaft Speed Sensor Range/Performance - AutoCodes.com — P0721 2002 Ford F150 Code - Output Shaft Speed Sensor Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0721 2002 Ford F150?

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 2002 Ford F150?

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 2002 Ford F150 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.

Need more information about the P0721 2002 Ford F150 code?

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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 2002 Ford F150 Code

1. What are the common symptoms of OBDII code P0721 in a 2002 Ford F150?

The common symptoms of OBDII code P0721 in a 2002 Ford F150 include erratic speedometer readings, harsh shifting, and the transmission going into limp mode.

2. What does the OBDII code P0721 mean for a 2002 Ford F150?

OBDII code P0721 in a 2002 Ford F150 indicates an issue with the Output Shaft Speed Sensor, specifically a range/performance problem.

3. What are the possible causes of OBDII code P0721 in a 2002 Ford F150?

The possible causes of OBDII code P0721 in a 2002 Ford F150 can include a faulty Output Shaft Speed Sensor, damaged wiring or connectors, or issues with the transmission control module.

4. How can I diagnose the OBDII code P0721 in my 2002 Ford F150?

To diagnose OBDII code P0721 in a 2002 Ford F150, you can use a scan tool to check for the code, inspect the wiring and connectors for damage, and test the Output Shaft Speed Sensor for proper function.

5. Can I continue driving my 2002 Ford F150 with OBDII code P0721?

It is not recommended to continue driving your 2002 Ford F150 with OBDII code P0721, as it can lead to further damage to the transmission and affect the vehicle's performance.

6. How do I repair OBDII code P0721 in a 2002 Ford F150?

To repair OBDII code P0721 in a 2002 Ford F150, you may need to replace the Output Shaft Speed Sensor, repair any damaged wiring or connectors, and clear the code with a scan tool.

7. Will resetting the OBDII code P0721 in my 2002 Ford F150 fix the issue?

Resetting the OBDII code P0721 in your 2002 Ford F150 may temporarily clear the code, but it is important to diagnose and repair the underlying issue to prevent the code from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0721 in a 2002 Ford F150?

A DIY enthusiast with the necessary tools and knowledge may be able to fix OBDII code P0721 in a 2002 Ford F150 by following repair guides and procedures specific to the Output Shaft Speed Sensor.

9. How much does it cost to repair OBDII code P0721 in a 2002 Ford F150?

The cost to repair OBDII code P0721 in a 2002 Ford F150 can vary depending on the cause of the issue, but it may involve the cost of a new Output Shaft Speed Sensor, wiring repairs, and labor.

10. Are there any preventive measures to avoid OBDII code P0721 in a 2002 Ford F150?

Regular maintenance, such as checking and replacing transmission fluid as recommended, can help prevent issues like OBDII code P0721 in a 2002 Ford F150 by keeping the transmission components in good condition.