Engine-CodesChevrolet – P1574 Chevrolet

P1574 Chevrolet Code - Stop Lamp Switch Circuit

Quick Answer

The P1574 Chevrolet code refers to an issue with the Stop Lamp Switch Circuit in the vehicle. Common causes include Faulty stop lamp switch, Damaged or corroded wiring in the circuit, Loose connections 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
P1574 Chevrolet indicates Stop Lamp Switch Circuit.
Common causes
Common causes include Faulty stop lamp switch, Damaged or corroded wiring in the circuit, Loose connections 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 Aug 30, 2024
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Code P1574 Chevrolet Description

The P1574 Chevrolet code refers to an issue with the Stop Lamp Switch Circuit in the vehicle. This code is typically triggered when there is a malfunction or fault detected in the circuit that controls the vehicle's brake lights. The stop lamp switch is a critical component that signals the brake lights to turn on when the brake pedal is pressed. When this circuit is not functioning correctly, it can affect the vehicle's safety by potentially causing the brake lights to not illuminate when the brake pedal is pressed, leading to a higher risk of rear-end collisions.

OBDII Code P1574 Chevrolet - Stop Lamp Switch Circuit
P1574 Chevrolet Code - Stop Lamp Switch Circuit

Common Causes of P1574 Chevrolet

  1. Faulty stop lamp switch.
  2. Damaged or corroded wiring in the circuit.
  3. Loose connections in the circuit.
  4. Faulty brake light bulbs.
  5. Issues with the brake light fuse.

Symptoms of P1574 Chevrolet

  1. Brake lights not illuminating when the brake pedal is pressed.
  2. Brake lights staying on constantly, even when the brake pedal is not pressed.
  3. Cruise control not working properly.
  4. Inability to shift out of park.
  5. Check Engine Light illuminated on the dashboard.

How to Fix P1574 Chevrolet

  1. Begin by locating the stop lamp switch, typically located near the brake pedal under the dashboard.
  2. Disconnect the wiring harness connected to the stop lamp switch.
  3. Remove the old stop lamp switch and replace it with a new one.
  4. Reconnect the wiring harness to the new stop lamp switch.
  5. Test the brake lights to ensure they illuminate properly when the brake pedal is pressed.

Cost to Fix P1574 Chevrolet

The cost of repairing the Stop Lamp Switch Circuit can vary depending on the specific issue and the vehicle's make and model. In general, the cost of replacing a stop lamp switch ranges from $50 to $100 for the part. Labor costs can add an additional $50 to $100, bringing the total repair cost to around $100 to $200. Keep in mind that these are rough estimates, and actual costs may vary based on the factors mentioned earlier.

When is the Code Detected?

The Powertrain Control Module (PCM) does not detect a stop lamp switch transition

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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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