AutoCodes – Chevrolet – P0573 2018 Chevrolet Silverado

P0573 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.

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Code Popularity 445

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 14, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0573 2018 Chevrolet Silverado Description

The Brake Pedal Position Sensor signal circuit is a B+ input from the Body Control Module (BCM) to the Engine Control Module (ECM). The BCM and ECM monitor the Brake Pedal Position Sensor signal circuit to detect when the brake pedal has been applied. When the brake pedal is applied, the BCM supplies B+ on the stop lamp signal circuit and also sends a serial data message to the ECM indicating that the brake pedal has been applied. This Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage on the discrete brake signal circuit when the serial data message from the BCM indicates the brakes are not applied. This diagnostic will run when the serial data message and the voltage signal on the brake switch signal circuit do not match for 8 out 10 times, and the condition is present for greater than 2 s.

OBDII Code P0573 2018 Chevrolet Silverado - Brake Switch Circuit High Voltage - AutoCodes.com — P0573 2018 Chevrolet Silverado Code - Brake Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0573 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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.

Need more information about the P0573 2018 Chevrolet Silverado code?

Need more information on how to fix the P0573 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0573 on a 2018 Chevrolet Silverado?

- Common symptoms include the brake lights staying on constantly, cruise control not working properly, and potential issues with shifting out of Park.

2. What does the OBDII code P0573 Brake Switch Circuit High Voltage indicate in a 2018 Chevrolet Silverado?

- This code indicates that the brake switch circuit is sending a higher voltage signal than expected to the vehicle's engine control module (ECM).

3. What are the possible causes of OBDII code P0573 on a 2018 Chevrolet Silverado?

- Potential causes include a faulty brake light switch, a short circuit in the brake light circuit, damaged wiring, or a malfunctioning ECM.

4. How can I diagnose the OBDII code P0573 on my 2018 Chevrolet Silverado?

- You can diagnose this code by checking the brake light switch for proper operation, inspecting the wiring for any damage or shorts, and using a diagnostic scanner to read the code and clear it for testing.

5. Can I still drive my 2018 Chevrolet Silverado with OBDII code P0573 present?

- It is generally not recommended to drive with this code active, as it can affect important safety features like the brake lights and potentially cause issues with the vehicle's operation.

6. How can I repair OBDII code P0573 on my 2018 Chevrolet Silverado?

- Repair options include replacing the brake light switch, repairing any damaged wiring, ensuring proper connections, and clearing the code with a diagnostic scanner.

7. Will OBDII code P0573 on a 2018 Chevrolet Silverado cause the vehicle to fail an emissions test?

- This code is related to the brake switch circuit and is unlikely to cause the vehicle to fail an emissions test, but it should still be addressed for safety and proper vehicle operation.

8. Are there any safety concerns associated with OBDII code P0573 on a 2018 Chevrolet Silverado?

- Yes, there are safety concerns, as the code can affect the brake lights' functionality, which is crucial for signaling your braking intentions to other drivers.

9. How much does it cost to fix OBDII code P0573 on a 2018 Chevrolet Silverado?

- The cost of fixing this code can vary depending on the root cause, but it may involve parts and labor costs for replacing the brake light switch or repairing wiring issues.

10. Can resetting the OBDII system clear the P0573 code on a 2018 Chevrolet Silverado?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is recommended to diagnose and repair the problem to prevent recurrence.