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P0703 2009 Ford Fusion Code - Brake Switch Performance

Quick Answer

The P0703 diagnostic trouble code (DTC) for a 2009 Ford Fusion specifically refers to the Brake Switch Performance. Common causes include Faulty brake switch, Wiring issues in the brake switch circuit, Corrosion or poor connections in the brake switch circuit. 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
P0703 2009 Ford Fusion indicates Brake Switch Performance.
Common causes
Common causes include Faulty brake switch, Wiring issues in the brake switch circuit, Corrosion or poor connections in the brake switch circuit.
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 15, 2024
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Code P0703 2009 Ford Fusion Description

The P0703 diagnostic trouble code (DTC) for a 2009 Ford Fusion specifically refers to the Brake Switch Performance. This code is triggered when the powertrain control module (PCM) detects a malfunction in the brake switch circuit. The brake switch is a crucial component in the vehicle's safety system, as it signals to the PCM when the brake pedal is depressed, allowing for proper operation of systems such as cruise control, traction control, and the transmission shift interlock.

OBDII Code P0703 2009 Ford Fusion - Brake Switch Performance
P0703 2009 Ford Fusion Code - Brake Switch Performance

Common Causes of P0703 2009 Ford Fusion

  1. Faulty brake switch
  2. Wiring issues in the brake switch circuit
  3. Corrosion or poor connections in the brake switch circuit
  4. Issues with the PCM or other related control modules
  5. Mechanical issues with the brake pedal or brake switch assembly

Symptoms of P0703 2009 Ford Fusion

  1. Difficulty shifting gears
  2. Inability to shift out of park
  3. Cruise control not engaging or disengaging unexpectedly
  4. Traction control or stability control warning lights illuminated on the dashboard
  5. Brake lights staying on or not turning off when the brake pedal is released

How to Fix P0703 2009 Ford Fusion

  1. Begin by locating the brake switch, typically located near the top of the brake pedal arm.
  2. Inspect the wiring and connections to the brake switch for any signs of damage, corrosion, or poor connections. Repair or replace as needed.
  3. Test the brake switch using a multimeter to ensure it is functioning properly. Replace the brake switch if it fails the test.
  4. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the PCM or other related components.

Cost to Fix P0703 2009 Ford Fusion

The cost of repairing a P0703 code on a 2009 Ford Fusion can vary depending on the specific cause of the issue and the labor rates in your area. Generally, replacing a faulty brake switch can cost between $50 and $100 for the part, with additional labor costs ranging from $100 to $200. Overall, you can expect to pay anywhere from $150 to $300 for this repair. Keep in mind that prices may fluctuate based on your location, the shop you choose, and any additional parts or services needed. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P0703 2009 Ford Fusion

Check if the stop light works with when the brake pedal is depressed if the brake lights are inoperative, replace or adjust the Brake Pedal Position (BPP) Switch (Stop Lamp Switch).

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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 P0703 2009 Ford Fusion Code

1. What does OBDII code P0703 on a 2009 Ford Fusion indicate?

- OBDII code P0703 in a 2009 Ford Fusion refers to "Brake Switch Performance."

2. What are the common symptoms of OBDII code P0703 in a 2009 Ford Fusion?

- Common symptoms may include issues with the brake lights staying on, cruise control not working, and trouble shifting out of park.

3. What are the possible causes of OBDII code P0703 in a 2009 Ford Fusion?

- The code P0703 in a 2009 Ford Fusion is often caused by a faulty brake light switch, damaged wiring, or a faulty transmission range sensor.

4. How can I diagnose the cause of OBDII code P0703 in my 2009 Ford Fusion?

- To diagnose the issue, you can visually inspect the brake light switch and its wiring for any visible damage. You may also use an OBDII scanner to retrieve the code and further troubleshoot the problem.

5. Can I still drive my 2009 Ford Fusion with OBDII code P0703?

- It is not recommended to drive your Ford Fusion with code P0703 as it can affect the proper operation of the transmission and other safety features.

6. How do I repair OBDII code P0703 in a 2009 Ford Fusion?

- The repair typically involves replacing the faulty brake light switch or repairing any damaged wiring associated with the brake switch.

7. Are there any DIY tips for fixing OBDII code P0703 in a 2009 Ford Fusion?

- If you have experience with automotive repairs, you may be able to replace the brake light switch yourself using basic tools. However, if you're unsure, it's best to consult a professional mechanic.

8. Will resetting the OBDII code P0703 in my 2009 Ford Fusion make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

9. How much does it cost to repair OBDII code P0703 in a 2009 Ford Fusion?

- The cost of repairing code P0703 in a 2009 Ford Fusion can vary depending on the extent of the damage and whether you do the repair yourself or take it to a mechanic.

10. Can OBDII code P0703 in my 2009 Ford Fusion cause other problems if left untreated?

- If left untreated, code P0703 can lead to more severe transmission issues and potentially compromise the safety and drivability of your Ford Fusion.

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