AutoCodes – Ford – P0720 1997 Ford F150

P0720 1997 Ford F150 Code - Output Shaft Speed Sensor Circuit Malfunction

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: P0720 1997 Ford F150 indicates Output Shaft Speed Sensor Circuit Malfunction.
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 6,722

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0720 1997 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 circuit malfunction.

OBDII Code P0720 1997 Ford F150 - Output Shaft Speed Sensor Circuit Malfunction - AutoCodes.com — P0720 1997 Ford F150 Code - Output Shaft Speed Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0720 1997 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 P0720 1997 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 P0720 1997 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.

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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 P0720 1997 Ford F150 Code

1. What are the common symptoms of OBDII code P0720 on a 1997 Ford F150?

The common symptoms of OBDII code P0720 on a 1997 Ford F150 include erratic or non-functional speedometer readings, harsh shifting, and the transmission going into limp mode.

2. What causes the Output Shaft Speed Sensor Circuit Malfunction code P0720 on a 1997 Ford F150?

The P0720 code on a 1997 Ford F150 is typically caused by a faulty output shaft speed sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning transmission control module.

3. How can I diagnose the Output Shaft Speed Sensor Circuit Malfunction on a 1997 Ford F150?

Diagnosing the P0720 code involves using a scan tool to read the fault codes, testing the output shaft speed sensor for proper operation, checking the wiring and connectors for damage, and verifying the signal input to the transmission control module.

4. Can a faulty output shaft speed sensor be repaired, or does it need to be replaced?

In most cases, a faulty output shaft speed sensor causing the P0720 code will need to be replaced. Repairing the sensor is not recommended as it may not provide a reliable long-term solution.

5. How much does it typically cost to repair the Output Shaft Speed Sensor Circuit Malfunction on a 1997 Ford F150?

The cost of repairing the P0720 code on a 1997 Ford F150 can vary depending on the labor rates and parts prices in your area. On average, expect to pay between $100 to $300 for parts and labor.

6. Is it safe to continue driving my 1997 Ford F150 with the P0720 code present?

It is not recommended to continue driving your 1997 Ford F150 with the P0720 code present, as it can lead to further transmission issues and potential safety hazards. It is best to address the problem as soon as possible.

7. Will resetting the OBDII code P0720 on my 1997 Ford F150 make it go away permanently?

Simply resetting the P0720 code on your 1997 Ford F150 will not fix the underlying issue causing the code. It may temporarily clear the code, but it will likely reappear until the root cause is addressed.

8. Can a DIY enthusiast repair the Output Shaft Speed Sensor Circuit Malfunction on a 1997 Ford F150?

DIY enthusiasts with the necessary tools and experience may be able to replace the output shaft speed sensor themselves. However, diagnosing and repairing wiring or module issues may require professional help.

9. How long does it take to repair the P0720 code on a 1997 Ford F150?

The repair time for the P0720 code on a 1997 Ford F150 can vary depending on the exact cause of the issue and the expertise of the technician. On average, the repair can take between 1-3 hours.

10. Will fixing the Output Shaft Speed Sensor Circuit Malfunction code improve the overall performance of my 1997 Ford F150?

Yes, addressing the P0720 code on your 1997 Ford F150 can improve the vehicle's performance by restoring proper transmission function, smooth shifting, and accurate speedometer readings.