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P0724 Pontiac Code - Brake Switch Circuit High Input

Quick Answer

The P0724 diagnostic trouble code (DTC) specifically relates to the Brake Switch Circuit High Input in Pontiac vehicles. Common causes include Faulty brake switch, Corrosion or damage to the brake switch wiring, Short circuit 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
P0724 Pontiac indicates Brake Switch Circuit High Input.
Common causes
Common causes include Faulty brake switch, Corrosion or damage to the brake switch wiring, Short circuit 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 Sep 12, 2024
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Code P0724 Pontiac Description

The P0724 diagnostic trouble code (DTC) specifically relates to the Brake Switch Circuit High Input in Pontiac vehicles. This code indicates that there is a high voltage input detected in the brake switch circuit. The brake switch is a crucial component in the vehicle's braking system, as it is responsible for sending a signal to the vehicle's computer (ECU) when the brake pedal is pressed. This signal is used to activate the brake lights and disengage cruise control, among other functions.

OBDII Code P0724 Pontiac - Brake Switch Circuit High Input
P0724 Pontiac Code - Brake Switch Circuit High Input

Common Causes of P0724 Pontiac

  1. Faulty brake switch.
  2. Corrosion or damage to the brake switch wiring.
  3. Short circuit in the brake switch circuit.
  4. Issues with the brake pedal position sensor.
  5. ECU malfunction.

Symptoms of P0724 Pontiac

  1. Constantly illuminated brake lights.
  2. Inability to disengage cruise control.
  3. Vehicle going into limp mode.
  4. Difficulty shifting gears.
  5. Check Engine Light illuminated.

How to Fix P0724 Pontiac

  1. Begin by inspecting the brake switch and its wiring for any signs of damage or corrosion. Replace the brake switch if necessary.
  2. Check the brake pedal position sensor for proper operation and replace if faulty.
  3. Test the brake switch circuit for any shorts or open circuits. Repair or replace any damaged wiring.
  4. Clear the DTC from the ECU using an OBD-II scanner and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to identify any underlying issues with the ECU or other related components.

Cost to Fix P0724 Pontiac

The typical repair costs for addressing a P0724 code in a Pontiac can range from $100 to $300, depending on the specific cause of the issue and the labor rates at the auto repair shop. Parts such as a new brake switch or wiring harness may also need to be factored into the overall cost. It is advisable to consult with a trusted mechanic or dealership to get an accurate estimate based on your vehicle's make and model. Labor rates at auto repair shops can vary, so it's always recommended to inquire about pricing beforehand.

When is the Code Detected?

The stop light switch does not turn off even once vehicle is driven.

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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 P0724 Pontiac Code

1. What does the OBDII code P0724 mean on a Pontiac?

P0724 indicates a "Brake Switch Circuit High Input," meaning the brake switch signal to the PCM is higher than expected or stuck in the "on" position.

2. What are the common symptoms of P0724 on a Pontiac?

Symptoms include brake lights staying on, cruise control not functioning, transmission shifting issues, or a check engine light.

3. What causes the P0724 code to appear on a Pontiac?

Common causes include a faulty brake light switch, damaged wiring or connectors, or a malfunction in the PCM.

4. Can I drive my Pontiac with the P0724 code?

While you can usually drive with this code, it may affect safety systems like brake lights and cruise control, so it’s best to address it promptly.

5. How do I diagnose the P0724 code on a Pontiac?

Start by checking the brake light switch, inspecting wiring and connectors for damage, and testing the brake light circuit with a multimeter.

6. Can a faulty brake light switch trigger the P0724 code?

Yes, a faulty or misaligned brake light switch is one of the most common causes of this code.

7. How is the P0724 code fixed on a Pontiac?

Repairs may include replacing the brake light switch, repairing damaged wiring, or reprogramming the PCM if necessary.

8. How much does it cost to fix the P0724 code on a Pontiac?

Costs vary but typically range from $50 to $200, depending on whether the issue is the brake light switch or wiring.

9. Will replacing the brake light switch always fix the P0724 code?

Not always; if wiring or the PCM is the issue, replacing the brake light switch alone won’t resolve the code.

10. Can a blown fuse cause the P0724 code on a Pontiac?

It’s uncommon, but a blown fuse in the brake light circuit could potentially contribute to this code.

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