AutoCodes – Ford – P0503 2010 Ford Fusion

P0503 2010 Ford Fusion Code - Vehicle Speed Sensor 'A' Intermittent

Quick Answer

Indicates poor or noisy VSS performance. Common causes include Faulty Vehicle Speed Sensor, Vehicle speed sensor harness or connectors is open or shorted, Vehicle 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: P0503 2010 Ford Fusion indicates Vehicle Speed Sensor 'A' Intermittent.
Common causes: Common causes include Faulty Vehicle Speed Sensor, Vehicle speed sensor harness or connectors is open or shorted, Vehicle 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 1,771

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0503 2010 Ford Fusion Description

Indicates poor or noisy VSS performance. Vehicle speed data is received from either the VSS, the transfer case speed sensor (TCSS), or the anti lock brake system (ABS) control module.

OBDII Code P0503 2010 Ford Fusion - Vehicle Speed Sensor 'A' Intermittent - AutoCodes.com — P0503 2010 Ford Fusion Code - Vehicle Speed Sensor 'A' Intermittent

What does this mean?

What are the Possible Causes of the DTC P0503 2010 Ford Fusion?

Faulty Vehicle Speed Sensor
Vehicle speed sensor harness or connectors is open or shorted
Vehicle speed sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0503 2010 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 P0503 2010 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.

Need more information about the P0503 2010 Ford Fusion 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 P0503 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P0503 on a 2010 Ford Fusion?

- Common symptoms include erratic speedometer readings, cruise control issues, harsh shifting, and an illuminated check engine light.

2. What does the OBDII code P0503 on a 2010 Ford Fusion indicate?

- The code P0503 indicates an intermittent malfunction in the Vehicle Speed Sensor 'A', which is responsible for sending speed data to the vehicle's engine control module.

3. What are some possible causes of the Vehicle Speed Sensor 'A' intermittent issue on a 2010 Ford Fusion?

- Possible causes include a faulty speed sensor, damaged wiring or connectors, a malfunctioning speedometer, or issues with the vehicle's transmission control module.

4. How can I diagnose the Vehicle Speed Sensor 'A' intermittent problem on my 2010 Ford Fusion?

- Diagnosing this issue involves using a scan tool to retrieve the trouble code, testing the speed sensor's electrical connections, inspecting the sensor for physical damage, and checking the speedometer for accuracy.

5. Can I continue driving my 2010 Ford Fusion with OBDII code P0503?

- It is not recommended to drive the vehicle with this code present, as it can lead to inaccurate speed readings, potential transmission issues, and reduced overall vehicle performance.

6. How can I repair the Vehicle Speed Sensor 'A' intermittent problem on my 2010 Ford Fusion?

- Repairing this issue typically involves replacing the faulty speed sensor, repairing or replacing damaged wiring, ensuring proper sensor alignment, and clearing the trouble code with a scan tool.

7. Is it possible to reset the OBDII code P0503 on a 2010 Ford Fusion without fixing the underlying issue?

- While you can clear the trouble code temporarily, it is important to address the root cause of the problem to prevent the code from reappearing and potentially causing further damage.

8. Can a DIY enthusiast fix the Vehicle Speed Sensor 'A' intermittent problem on a 2010 Ford Fusion?

- Depending on your experience and tools available, replacing the speed sensor or repairing wiring issues may be feasible for a DIY enthusiast. However, it is recommended to consult a professional if unsure.

9. How much does it cost to repair the Vehicle Speed Sensor 'A' intermittent issue on a 2010 Ford Fusion?

- The cost of repair can vary depending on the specific cause of the problem, the labor rates in your area, and whether you choose to replace the sensor yourself or have a mechanic do the work.

10. Will fixing the Vehicle Speed Sensor 'A' issue on my 2010 Ford Fusion improve the vehicle's performance?

- Yes, resolving the speed sensor problem can improve the vehicle's performance by ensuring accurate speed data transmission, smoother shifting, and proper operation of related systems like cruise control.