Engine-CodesToyota – P1520 1999 Toyota Camry

P1520 1999 Toyota Camry Code - Stop Light Switch Signal Malfunction

Quick Answer

The P1520 diagnostic trouble code for a 1999 Toyota Camry indicates a malfunction in the stop light switch signal. Common causes include Faulty stop light switch, Wiring issues or loose connections in the brake light circuit, Corrosion or damage to the stop light switch signal wire. 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
P1520 1999 Toyota Camry indicates Stop Light Switch Signal Malfunction.
Common causes
Common causes include Faulty stop light switch, Wiring issues or loose connections in the brake light circuit, Corrosion or damage to the stop light switch signal wire.
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 P1520 1999 Toyota Camry Description

The P1520 diagnostic trouble code for a 1999 Toyota Camry indicates a malfunction in the stop light switch signal. The stop light switch is a crucial component in the vehicle's braking system, as it is responsible for activating the brake lights when the brake pedal is pressed. When this switch malfunctions, it can lead to various issues with the vehicle's braking system and overall performance.

OBDII Code P1520 1999 Toyota Camry - Stop Light Switch Signal Malfunction
P1520 1999 Toyota Camry Code - Stop Light Switch Signal Malfunction

Common Causes of P1520 1999 Toyota Camry

  1. Faulty stop light switch.
  2. Wiring issues or loose connections in the brake light circuit.
  3. Corrosion or damage to the stop light switch signal wire.
  4. Malfunctioning brake light bulbs.
  5. Issues with the brake light relay.

Symptoms of P1520 1999 Toyota Camry

  1. Brake lights not illuminating when the brake pedal is pressed.
  2. Inability to disengage cruise control when the brakes are applied.
  3. Illumination of the check engine light on the dashboard.
  4. Issues with shifting out of park due to the brake light signal malfunction.

How to Fix P1520 1999 Toyota Camry

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

Cost to Fix P1520 1999 Toyota Camry

The typical repair costs for addressing a P1520 code related to a stop light switch signal malfunction in a 1999 Toyota Camry can range from $50 to $150 for parts, with additional labor costs of around $80 to $150 per hour. It's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate.

When is the Code Detected?

The stop light switch does not turn off even once the vehicle is driven (2 trip detection logic)

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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 P1520 1999 Toyota Camry Code

1. What are the common symptoms of OBDII code P1520 in a 1999 Toyota Camry?

- Common symptoms include the brake lights staying on or not working, the inability to shift out of park, and the illumination of the check engine light.

2. What does the OBDII code P1520 indicate in a 1999 Toyota Camry?

- OBDII code P1520 in a 1999 Toyota Camry indicates a malfunction in the stop light switch signal.

3. What are the possible causes of the stop light switch signal malfunction in a 1999 Toyota Camry?

- Possible causes include a faulty stop light switch, wiring issues, a blown fuse, or a problem with the brake pedal position sensor.

4. How can I diagnose the stop light switch signal malfunction in my 1999 Toyota Camry?

- You can diagnose the issue by checking the stop light switch for proper functioning, inspecting the wiring for any damage, and testing the brake pedal position sensor.

5. Can I still drive my 1999 Toyota Camry with the OBDII code P1520?

- It is not recommended to drive the vehicle with the P1520 code as it can affect the brake lights and potentially lead to unsafe driving conditions.

6. How can I repair the stop light switch signal malfunction in my 1999 Toyota Camry?

- Repairing the issue may involve replacing the faulty stop light switch, repairing any damaged wiring, or addressing any issues with the brake pedal position sensor.

7. Can I reset the OBDII code P1520 in my 1999 Toyota Camry by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is important to address the underlying issue causing the malfunction to prevent the code from reappearing.

8. Will the OBDII code P1520 affect the performance of my 1999 Toyota Camry?

- While the code itself may not affect performance directly, it can lead to safety concerns due to malfunctioning brake lights and potential transmission shifting issues.

9. Is it necessary to take my 1999 Toyota Camry to a mechanic for the OBDII code P1520 repair?

- While some DIY enthusiasts may be able to diagnose and repair the issue themselves, it is recommended to consult a mechanic for proper diagnosis and repair to ensure safety and accuracy.

10. How much does it typically cost to repair the stop light switch signal malfunction in a 1999 Toyota Camry?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $50 to $200 for parts and labor.

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