Engine-CodesFord – P0573 2010 Ford Fusion

P0573 2010 Ford Fusion Code - Brake Switch 'A' Circuit High

Quick Answer

The P0573 code for a 2010 Ford Fusion indicates a problem with the Brake Switch 'A' Circuit being too high. Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Corrosion 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
P0573 2010 Ford Fusion indicates Brake Switch 'A' Circuit High.
Common causes
Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Corrosion 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.
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code P0573 2010 Ford Fusion Description

The P0573 code for a 2010 Ford Fusion indicates a problem with the Brake Switch 'A' Circuit being too high. The brake switch is a crucial component in the vehicle's braking system, as it sends a signal to the vehicle's computer when the brake pedal is pressed. This signal is used to activate the brake lights and disengage cruise control, among other functions. When the circuit is reading as high, it means that the voltage in the brake switch circuit is higher than the expected range, which can lead to various issues with the vehicle's performance.

OBDII Code P0573 2010 Ford Fusion - Brake Switch 'A' Circuit High
P0573 2010 Ford Fusion Code - Brake Switch 'A' Circuit High

Common Causes of P0573 2010 Ford Fusion

  1. Faulty brake switch
  2. Damaged wiring or connectors in the brake switch circuit
  3. Corrosion in the brake switch circuit
  4. Issues with the vehicle's computer system

Symptoms of P0573 2010 Ford Fusion

  1. Brake lights staying on or not working at all
  2. Cruise control not disengaging when the brake pedal is pressed
  3. Difficulty shifting gears
  4. Vehicle not starting

How to Fix P0573 2010 Ford Fusion

  1. Begin by inspecting the brake switch and its wiring for any visible damage or corrosion.
  2. Test the brake switch using a multimeter to check for proper voltage readings.
  3. Replace the brake switch if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the brake switch circuit.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0573 2010 Ford Fusion

The typical repair costs for addressing a P0573 code on a 2010 Ford Fusion can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

Tech Notes for P0573 2010 Ford Fusion

Check the bulb and fuse first, if they are good replace the stop lamp switch (it is located behind the brake pedal)

When is the Code Detected?

The P0573 codes is set when the stop light switch signal is too high.

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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 P0573 2010 Ford Fusion Code

1. What does the OBDII code P0573 mean on a 2010 Ford Fusion?

P0573 indicates a "Brake Switch 'A' Circuit High" fault, meaning the brake light switch is sending a voltage signal that is higher than expected.

2. What are the common symptoms of code P0573 in a 2010 Ford Fusion?

Symptoms include malfunctioning brake lights, cruise control not working, and potentially an illuminated check engine light.

3. What causes the P0573 code to appear?

Common causes include a faulty brake light switch, damaged or corroded wiring, a stuck brake pedal, or a defective connector.

4. Can I drive my 2010 Ford Fusion with the P0573 code?

While the car may be drivable, the issue can affect brake light functionality and cruise control, posing a safety risk. It’s best to address it promptly.

5. How do I diagnose the P0573 code on my Ford Fusion?

Start by inspecting the brake light switch, wiring, and connectors for damage or corrosion. A multimeter can be used to test for proper voltage at the switch.

6. How do I fix the P0573 code on a 2010 Ford Fusion?

Repairs may include replacing the brake light switch, repairing damaged wiring, cleaning corroded connections, or resetting the code after repairs.

7. Where is the brake light switch located on a 2010 Ford Fusion?

The brake light switch is typically located near the brake pedal assembly, mounted to detect the pedal's position.

8. What tools are needed to fix the P0573 code?

Common tools include a multimeter, basic hand tools for removing and replacing the switch, and possibly a scan tool to clear the code.

9. How much does it cost to repair a P0573 code on a 2010 Ford Fusion?

Repair costs vary but replacing a brake light switch typically costs $50-$150, including parts and labor.

10. Can a faulty brake light switch affect cruise control operation?

Yes, a faulty brake light switch can disable the cruise control, as the system relies on the switch to detect when the brakes are applied.

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