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P0573 2012 Ford Fusion Code - Brake Switch 'A' Circuit High

Quick Answer

The P0573 code for a 2012 Ford Fusion indicates a problem with the Brake Switch 'A' Circuit being too high. Common causes include Faulty brake switch, Wiring issues in the brake switch circuit, Corrosion or damage to electrical connections. 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 2012 Ford Fusion indicates Brake Switch 'A' Circuit High.
Common causes
Common causes include Faulty brake switch, Wiring issues in the brake switch circuit, Corrosion or damage to electrical connections.
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 P0573 2012 Ford Fusion Description

The P0573 code for a 2012 Ford Fusion indicates a problem with the Brake Switch 'A' Circuit being too high. The brake switch is a crucial component of the vehicle's braking system, as it is responsible for signaling the vehicle's electronic control unit (ECU) when the brake pedal is pressed. When the ECU detects that the brake switch 'A' circuit is reading a high voltage signal when it should be low, it triggers the P0573 code.

OBDII Code P0573 2012 Ford Fusion - Brake Switch 'A' Circuit High
P0573 2012 Ford Fusion Code - Brake Switch 'A' Circuit High

Common Causes of P0573 2012 Ford Fusion

  1. Faulty brake switch
  2. Wiring issues in the brake switch circuit
  3. Corrosion or damage to electrical connections
  4. Faulty ECU or other related components
  5. Issues with the brake pedal position sensor

Symptoms of P0573 2012 Ford Fusion

  1. Brake lights staying on constantly or not working at all
  2. Cruise control not engaging or disengaging unexpectedly
  3. Inability to shift out of park
  4. ABS warning light illuminated on the dashboard
  5. Vehicle experiencing intermittent or erratic behavior when braking

How to Fix P0573 2012 Ford Fusion

  1. Begin by diagnosing the root cause of the issue by using a diagnostic scanner to read the codes and test the brake switch and related components.
  2. Inspect the brake switch for any visible damage or wear and replace if necessary.
  3. Check the wiring and electrical connections in the brake switch circuit for any signs of damage, corrosion, or loose connections.
  4. Test the ECU and other related components to ensure they are functioning properly and replace if needed.
  5. Clear the code from the ECU's memory and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0573 2012 Ford Fusion

The cost of repairing a P0573 code on a 2012 Ford Fusion can vary depending on the specific cause of the issue. On average, the cost of replacing a faulty brake switch can range from $50 to $150, while diagnosing and repairing wiring or electrical issues can add to the total cost. Labor rates at auto repair shops can range from $80 to $150 per hour, so it is advisable to check with local shops for a more accurate estimate based on your location and vehicle.

What does this mean?

Tech Notes for P0573 2012 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 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P0573 in a 2012 Ford Fusion?

- Common symptoms include the brake lights staying on continuously, cruise control not working, and the inability to shift out of park.

2. What does the OBDII code P0573 for a 2012 Ford Fusion indicate?

- OBDII code P0573 indicates an issue with the Brake Switch 'A' Circuit High, suggesting a problem with the brake light switch circuit.

3. What are the possible causes of OBDII code P0573 in a 2012 Ford Fusion?

- Possible causes include a faulty brake light switch, damaged wiring or connectors in the brake light circuit, or a malfunctioning brake control module.

4. How can I diagnose the OBDII code P0573 in my 2012 Ford Fusion?

- Diagnosing OBDII code P0573 involves checking the brake light switch for proper operation, inspecting the wiring and connectors for any damage, and testing the brake control module if needed.

5. Can I drive my 2012 Ford Fusion with OBDII code P0573?

- It is not recommended to drive your vehicle with OBDII code P0573 as it can affect the proper functioning of the brake lights and other safety features.

6. How can I repair OBDII code P0573 in my 2012 Ford Fusion?

- Repairing OBDII code P0573 may involve replacing the faulty brake light switch, repairing or replacing damaged wiring or connectors, or reprogramming the brake control module.

7. Are there any DIY tips for fixing OBDII code P0573 in a 2012 Ford Fusion?

- DIY tips include checking and adjusting the brake light switch position, inspecting the wiring for any visible damage, and ensuring proper connection of all components in the brake light circuit.

8. How much does it cost to fix OBDII code P0573 in a 2012 Ford Fusion?

- The cost of fixing OBDII code P0573 can vary depending on the cause of the issue, but it may range from $50 to $200 for parts and labor.

9. Will OBDII code P0573 cause my 2012 Ford Fusion to fail an emissions test?

- OBDII code P0573 is related to the brake light circuit and is unlikely to cause your vehicle to fail an emissions test.

10. Can resetting the OBDII system clear the P0573 code in my 2012 Ford Fusion?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing P0573 is not addressed, the code is likely to reappear.

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