Engine-CodesLincoln – P0573 Lincoln

P0573 Lincoln Code - Brake Switch 'A' Circuit High

Quick Answer

The P0573 diagnostic trouble code (DTC) for Lincoln vehicles indicates an issue with the Brake Switch 'A' Circuit being too high. Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Malfunctioning PCM. 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 Lincoln indicates Brake Switch 'A' Circuit High.
Common causes
Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Malfunctioning PCM.
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 12, 2024
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Code P0573 Lincoln Description

The P0573 diagnostic trouble code (DTC) for Lincoln vehicles indicates an issue with the Brake Switch 'A' Circuit being too high. This code is typically triggered when the powertrain control module (PCM) detects a higher than normal voltage signal from the brake switch circuit. The brake switch is a crucial component of the vehicle's braking system as it sends a signal to the PCM when the brake pedal is depressed, allowing the vehicle to come to a stop.

OBDII Code P0573 Lincoln - Brake Switch 'A' Circuit High
P0573 Lincoln Code - Brake Switch 'A' Circuit High

Common Causes of P0573 Lincoln

  1. Faulty brake switch
  2. Damaged wiring or connectors in the brake switch circuit
  3. Malfunctioning PCM
  4. Low battery voltage

Symptoms of P0573 Lincoln

  1. Brake lights staying on continuously or not working at all
  2. Inability to shift out of park
  3. Cruise control not engaging
  4. Check Engine Light illuminated on the dashboard
  5. Vehicle going into limp mode

How to Fix P0573 Lincoln

  1. Begin by conducting a visual inspection of the brake switch and its wiring. Look for any visible signs of damage, such as frayed wires or loose connectors.
  2. Test the brake switch using a multimeter to check for continuity and proper voltage output when the brake pedal is depressed.
  3. If the brake switch is found to be faulty, replace it with a new one. Make sure to adjust the switch to the correct position before securing it in place.
  4. Check the wiring harness for any damaged wires or connectors. Repair or replace any damaged components as needed.
  5. Clear the DTC from the PCM using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0573 Lincoln

The typical repair costs for addressing the Brake Switch 'A' Circuit High code can vary depending on the specific cause of the issue. On average, you can expect to pay between $100 to $300 for parts and labor. However, this estimate can fluctuate based on the location of the repair shop, the make and model of your Lincoln vehicle, and the rates charged by the technician. It's recommended to obtain quotes from multiple repair shops to find the best deal. Keep in mind that labor rates can range from $80 to $150 per hour, so the total cost may vary.

Tech Notes for P0573 Lincoln

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.

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