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P0573 Chevrolet Code - Brake Switch Circuit High Voltage

Quick Answer

When the P0573 code appears in a Chevrolet vehicle, it indicates that there is a high voltage condition present in the brake switch circuit. Common causes include Faulty brake switch, Short circuit in the brake switch circuit, Corroded or damaged wiring 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 Chevrolet indicates Brake Switch Circuit High Voltage.
Common causes
Common causes include Faulty brake switch, Short circuit in the brake switch circuit, Corroded or damaged wiring 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 Aug 18, 2024
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Code P0573 Chevrolet Description

When the P0573 code appears in a Chevrolet vehicle, it indicates that there is a high voltage condition present in the brake switch circuit. The brake switch is a crucial component in the vehicle's braking system, as it is responsible for activating the brake lights when the brake pedal is pressed. This code typically means that the voltage in the brake switch circuit is higher than what is expected, which can lead to issues with the vehicle's brake lights, cruise control, and other related systems. If not addressed, this issue can potentially affect the vehicle's safety and performance, as it may lead to malfunctioning brake lights or an inability to engage the cruise control system.

OBDII Code P0573 Chevrolet - Brake Switch Circuit High Voltage
P0573 Chevrolet Code - Brake Switch Circuit High Voltage

Common Causes of P0573 Chevrolet

  1. Faulty brake switch
  2. Short circuit in the brake switch circuit
  3. Corroded or damaged wiring in the brake switch circuit
  4. Issues with the brake switch circuit's connection to the vehicle's main computer
  5. Faulty PCM (Powertrain Control Module)

Symptoms of P0573 Chevrolet

  1. Malfunctioning brake lights
  2. Inability to engage cruise control
  3. Illumination of the brake warning light on the dashboard
  4. Difficulty shifting out of park
  5. Erratic behavior of the vehicle's transmission

How to Fix P0573 Chevrolet

  1. Begin by inspecting the brake switch and its wiring for any visible signs of damage or corrosion.
  2. Test the brake switch using a multimeter to check for proper functionality.
  3. If the brake switch is determined to be faulty, replace it with a new one.
  4. Check the wiring in the brake switch circuit for any shorts or breaks, repairing or replacing as needed.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test the system to ensure the issue has been resolved.

Cost to Fix P0573 Chevrolet

The cost of repairing a P0573 code in a Chevrolet vehicle can vary depending on the specific model and the extent of the issue. On average, the parts for a brake switch replacement can range from $20 to $50, while the labor cost can be between $80 and $150 per hour. Overall, the total repair cost for this issue is typically in the range of $100 to $300. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the individual circumstances.

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Information for Specific Chevrolet Models

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 Chevrolet Code

No Frequently Asked Questions about P0573 Chevrolet Code found.

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  • I have a 2011 Silverado and the cruise control does not work, PO573 code is coming up... what can I do to fix it??

    Reply to Comment

  • The problem is the Brake Light Switch. Replacing the switch usually takes care of the problem.

    Reply to Comment

  • Could this also be why my 2007 Chevy suburban turn off when I brake?

    Reply to Comment

  • Very unlikely, a bad switch may trigger the code or cause the brake light to stop working, but I haven't seen turning off the engine.

    Reply to Comment

  • I have the same problem 2011 Silverado cruise control does not work P0573. I change the brake control switch cruise control still does not work. What can I check now?
    Thanks Jamie

    Reply to Comment

  • Unfortunately, other than the Brake Light Switch (Stop Lamp Switch) on the brake pedal, I have not seen any other component setting the P0573 code. Please double check the switch installation.

    Do you have adjustable pedals?

    Reply to Comment

  • I have put two new switches in and neither one made a difference. My truck does have the adjustable pedals.and I have checked around already for frayed wires and I haven't seen any evidence of that.
    Thanks again
    Jamie

    Reply to Comment