Engine-CodesToyota – P1520 2002 Toyota Echo

P1520 2002 Toyota Echo Code - Stop Light Switch Signal Malfunction

Quick Answer

The P1520 code for a 2002 Toyota Echo indicates a Stop Light Switch Signal Malfunction. Common causes include Faulty stop light switch, Wiring issues or short circuits in the brake light circuit, Brake pedal position sensor malfunction. 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 2002 Toyota Echo indicates Stop Light Switch Signal Malfunction.
Common causes
Common causes include Faulty stop light switch, Wiring issues or short circuits in the brake light circuit, Brake pedal position sensor malfunction.
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 17, 2024
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Code P1520 2002 Toyota Echo Description

The P1520 code for a 2002 Toyota Echo indicates a Stop Light Switch Signal Malfunction. This means that the vehicle's onboard computer has detected an issue with the signal coming from the stop light switch. The stop light switch is a crucial component that activates the brake lights when the brake pedal is pressed. When this signal malfunctions, it can have several implications for the vehicle's performance and safety.

OBDII Code P1520 2002 Toyota Echo - Stop Light Switch Signal Malfunction
P1520 2002 Toyota Echo Code - Stop Light Switch Signal Malfunction

Common Causes of P1520 2002 Toyota Echo

  1. Faulty stop light switch
  2. Wiring issues or short circuits in the brake light circuit
  3. Brake pedal position sensor malfunction
  4. Corrosion or damage to electrical connectors
  5. Issues with the vehicle's computer system

Symptoms of P1520 2002 Toyota Echo

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

How to Fix P1520 2002 Toyota Echo

  1. Begin by locating the stop light switch, typically located near the brake pedal.
  2. Inspect the wiring and connectors for any signs of damage or corrosion.
  3. Test the stop light switch using a multimeter to check for continuity when the brake pedal is pressed.
  4. If the stop light switch is faulty, replace it with a new one following manufacturer's instructions.
  5. Clear the diagnostic trouble codes using an OBD-II scanner and test the vehicle to ensure the issue has been resolved.

Cost to Fix P1520 2002 Toyota Echo

The typical repair costs for a Stop Light Switch Signal Malfunction can range from $50 to $150 for the part, with additional labor costs of $80 to $150 per hour. The total cost can vary depending on the specific cause of the issue and the shop's labor rates. It's advisable to check with local auto repair shops for a more accurate estimate based on your location and vehicle model.

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 2002 Toyota Echo Code

1. What are the common symptoms of OBDII code P1520 on a 2002 Toyota Echo?

- Common symptoms include the Check Engine Light being illuminated, difficulty shifting gears, and the inability to start the vehicle.

2. What does the OBDII code P1520 for a 2002 Toyota Echo indicate?

- This code indicates a Stop Light Switch Signal Malfunction, which means that the signal from the brake light switch is not being properly received by the engine control module.

3. What are the possible causes of OBDII code P1520 on a 2002 Toyota Echo?

- Possible causes include a faulty stop light switch, damaged wiring or connectors related to the switch, or a malfunctioning engine control module.

4. How can I diagnose the cause of OBDII code P1520 on my 2002 Toyota Echo?

- You can start by checking the stop light switch for proper operation, inspecting the wiring and connectors for any damage, and using an OBDII scanner to clear the code and see if it returns.

5. Can I still drive my 2002 Toyota Echo with OBDII code P1520?

- It is not recommended to drive the vehicle with this code present, as it can affect the proper operation of the transmission and other systems.

6. How do I repair OBDII code P1520 on a 2002 Toyota Echo?

- The most common repair is to replace the faulty stop light switch, which is a relatively simple and inexpensive fix. Ensure proper installation and testing after replacement.

7. Are there any DIY tips for fixing OBDII code P1520 on a 2002 Toyota Echo?

- DIY enthusiasts can follow online tutorials for replacing the stop light switch, ensuring to disconnect the battery before starting any work and verifying the switch's proper alignment.

8. Can a faulty brake light bulb cause OBDII code P1520 on a 2002 Toyota Echo?

- While a faulty brake light bulb itself may not trigger the code, it's still a good idea to check and replace any burned-out bulbs as part of routine maintenance.

9. How long does it take to repair OBDII code P1520 on a 2002 Toyota Echo?

- The repair time can vary depending on your experience level, but replacing the stop light switch usually takes about 30 minutes to an hour.

10. Will OBDII code P1520 clear on its own after the issue is fixed on a 2002 Toyota Echo?

- Once the underlying issue is fixed and the vehicle is driven for a while without any further problems, the Check Engine Light may reset on its own after a few successful drive cycles.

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