P0573 Buick Code - Brake Switch Circuit High Voltage
Quick Answer
The Brake Pedal Position Sensor signal circuit is a B+ input from the Body Control Module (BCM) to the Engine Control Module (ECM). Common causes include Faulty Brake Pedal Position Sensor, Misadjusted Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted. 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 Buick indicates Brake Switch Circuit High Voltage.
- Common causes
- Common causes include Faulty Brake Pedal Position Sensor, Misadjusted Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted.
- 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.
Code P0573 Buick Description
What are the Possible Causes of the DTC P0573 Buick?
- Faulty Brake Pedal Position Sensor
- Misadjusted Brake Pedal Position Sensor
- Brake Pedal Position Sensor harness is open or shorted
- Brake Pedal Position Sensor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC P0573 Buick?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0573 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0573 Buick Code
1. What does the OBDII code P0573 mean on a Buick?
P0573 indicates a "Brake Switch Circuit High Voltage" issue, meaning the powertrain control module (PCM) has detected a higher-than-normal voltage in the brake switch circuit.
2. What are the common symptoms of code P0573 in a Buick?
Symptoms may include the brake lights not functioning properly, cruise control being inoperative, and a potential check engine light or ABS warning light.
3. What causes the P0573 code on a Buick?
Common causes include a faulty brake light switch, damaged or corroded wiring, a poor electrical connection, or a blown fuse in the brake light circuit.
4. Can I drive my Buick with the P0573 code?
While the car may still be drivable, it's not recommended, as malfunctioning brake lights and cruise control can create safety hazards.
5. How do I diagnose the P0573 code on a Buick?
Start by inspecting the brake light switch, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.
6. How do I fix the P0573 code on my Buick?
Repairs may include replacing a faulty brake light switch, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.
7. What tools are needed to fix the P0573 code in a Buick?
You may need a multimeter, a scan tool or OBDII code reader, and basic hand tools to access and repair the brake light switch or wiring.
8. How much does it cost to fix the P0573 code on a Buick?
Repair costs can vary but typically range from $50 to $200, depending on whether the issue is with the brake light switch, wiring, or connectors.
9. Can a bad brake light bulb cause the P0573 code in a Buick?
A bad bulb is unlikely to trigger this code, as it specifically relates to high voltage in the brake switch circuit, not the bulbs themselves.
10. Will clearing the P0573 code fix the problem?
Clearing the code may temporarily turn off the check engine light, but the issue will return unless the underlying problem is properly addressed.
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