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

Quick Answer

The P0720 code for a 1997 Ford F150 indicates a malfunction in the output shaft speed sensor circuit. Common causes include Faulty output shaft speed sensor, Damaged wiring or connectors in the sensor circuit, ECM software issues. 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 shaft speed sensor, Damaged wiring or connectors in the sensor circuit, ECM software issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0720 1997 Ford F150 Description

The P0720 code for a 1997 Ford F150 indicates a malfunction in the output shaft speed sensor circuit. This sensor is responsible for monitoring the speed of the output shaft in the transmission, providing crucial data for the vehicle's engine control module (ECM) to adjust shift points and ensure smooth gear changes. When this sensor circuit malfunctions, it can lead to a variety of issues affecting the vehicle's performance and drivability.

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

Common Causes of P0720 1997 Ford F150

  1. Faulty output shaft speed sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM software issues
  4. Transmission fluid contamination
  5. Mechanical damage to the transmission system

Symptoms of P0720 1997 Ford F150

  1. Rough or delayed gear shifts
  2. Transmission slipping
  3. Check Engine light illuminated
  4. Decreased fuel efficiency
  5. Vehicle going into "limp mode" to prevent further damage

How to Fix P0720 1997 Ford F150

  1. Use a diagnostic scanner to retrieve the specific fault code and confirm the output shaft speed sensor circuit malfunction.
  2. Inspect the output shaft speed sensor, wiring, and connectors for any signs of damage or corrosion.
  3. Replace the faulty output shaft speed sensor if necessary.
  4. Repair or replace damaged wiring or connectors in the sensor circuit.
  5. Clear the fault code and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0720 1997 Ford F150

The typical repair costs for addressing a P0720 code in a 1997 Ford F150 can range from $150 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less for repairs.

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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.

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