Engine-CodesGMC – P0719 GMC

P0719 GMC Code - Brake Switch Circuit Low Input

Quick Answer

The P0719 code for GMC vehicles refers to a Brake Switch Circuit Low Input. Common causes include Faulty or damaged brake switch, Wiring harness issues, Corrosion or poor connection in the 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
P0719 GMC indicates Brake Switch Circuit Low Input.
Common causes
Common causes include Faulty or damaged brake switch, Wiring harness issues, Corrosion or poor connection in the 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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0719 GMC Description

The P0719 code for GMC vehicles refers to a Brake Switch Circuit Low Input. This means that the brake switch, which is responsible for signaling to the vehicle's computer when the brake pedal is pressed, is sending a signal that is lower than the expected range. This can affect the vehicle's performance by causing issues with the brake lights, cruise control, and potentially the transmission system.

OBDII Code P0719 GMC - Brake Switch Circuit Low Input
P0719 GMC Code - Brake Switch Circuit Low Input

Common Causes of P0719 GMC

  1. Faulty or damaged brake switch
  2. Wiring harness issues
  3. Corrosion or poor connection in the circuit
  4. Faulty brake pedal position sensor
  5. Issues with the vehicle's computer

Symptoms of P0719 GMC

  1. Brake lights not illuminating when the brake pedal is pressed
  2. Inability to engage or disengage cruise control
  3. Transmission shifting irregularities
  4. Check Engine Light illuminated on the dashboard

How to Fix P0719 GMC

  1. Diagnose the issue using a diagnostic scanner to confirm the P0719 code
  2. Inspect the brake switch, wiring harness, and brake pedal position sensor for any damage or faults
  3. Repair or replace any faulty components identified during the inspection
  4. Clear the code from the vehicle's computer and test the brake switch circuit for proper function
  5. Test drive the vehicle to ensure that the symptoms associated with the P0719 code have been resolved

Cost to Fix P0719 GMC

The cost estimate for repairing a P0719 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this issue can range from $100 to $300. This cost includes the price of any necessary parts, such as a new brake switch or wiring harness, as well as the labor required to diagnose and repair the problem. It is recommended to consult with a professional mechanic to get a more accurate estimate based on your vehicle's make and model.

When is the Code Detected?

When the Powertrain Control Module (PCM) detects an open brake switch circuit (0 volts, low input) during accelerations, then the P0719 is set.

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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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