AutoCodes – Toyota – P1520 2000 Toyota Echo

P1520 2000 Toyota Echo Code - Stop Light Switch Signal Malfunction

Quick Answer

This signal is used to detect when the brakes have been applied. Common causes include Faulty Stop Light Switch, Stop Light Switch harness is open or shorted, Stop Light Switch circuit poor electrical connection. 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 2000 Toyota Echo indicates Stop Light Switch Signal Malfunction.
Common causes: Common causes include Faulty Stop Light Switch, Stop Light Switch harness is open or shorted, Stop Light Switch circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,397

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1520 2000 Toyota Echo Description

This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as the voltage supplied to the stop lights. The STP signal is used mainly to control the fuel cut–off engine speed (The fuel cut–off engine speed is reduced slightly when the vehicle is braking).

OBDII Code P1520 2000 Toyota Echo - Stop Light Switch Signal Malfunction - AutoCodes.com — P1520 2000 Toyota Echo Code - Stop Light Switch Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC P1520 2000 Toyota Echo?

Faulty Stop Light Switch
Stop Light Switch harness is open or shorted
Stop Light Switch circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1520 2000 Toyota Echo?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1520 2000 Toyota Echo code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1520 2000 Toyota Echo code?

Need more information on how to fix the P1520 2000 Toyota Echo code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1520 2000 Toyota Echo code diagnosed by a professional: Find a repair shop in your area

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 2000 Toyota Echo Code

1. What are the common symptoms of OBDII code P1520 in a 2000 Toyota Echo?

- Common symptoms include the check engine light coming on, difficulty shifting gears, and the inability to engage cruise control.

2. What is the most likely cause of OBDII code P1520 in a 2000 Toyota Echo?

- The most common cause of this code is a malfunctioning stop light switch, which is responsible for signaling the brake pedal position to the vehicle's computer.

3. How can I diagnose a stop light switch signal malfunction in my 2000 Toyota Echo?

- You can start by checking the physical condition of the stop light switch and its wiring connections. Using an OBDII scanner to read the error code can also help pinpoint the issue.

4. Can I continue driving my 2000 Toyota Echo with OBDII code P1520?

- It is not recommended to continue driving with this code as it can affect the vehicle's performance and safety features. Getting the issue fixed promptly is important.

5. How can I repair a stop light switch signal malfunction in my 2000 Toyota Echo?

- Repairing this issue usually involves replacing the faulty stop light switch with a new one. Ensure proper installation and adjustment to resolve the problem.

6. Is it possible to reset OBDII code P1520 in a 2000 Toyota Echo without fixing the underlying issue?

- While you can clear the error code with an OBDII scanner, the issue will likely reappear if the root cause, such as a faulty stop light switch, is not addressed.

7. Can a DIY enthusiast fix OBDII code P1520 in a 2000 Toyota Echo?

- Yes, replacing a stop light switch is a relatively straightforward task that can be done by a DIY enthusiast with basic automotive knowledge and tools.

8. How much does it cost to repair OBDII code P1520 in a 2000 Toyota Echo at a professional auto repair shop?

- The cost of repairing this code can vary depending on labor rates and the price of the replacement stop light switch. It is advisable to get quotes from different shops.

9. Will fixing OBDII code P1520 improve the fuel efficiency of my 2000 Toyota Echo?

- While this code is more related to safety and performance issues, resolving it may contribute to overall vehicle efficiency by ensuring proper communication between components.

10. Are there any recalls or service bulletins related to OBDII code P1520 in 2000 Toyota Echo vehicles?

- It's recommended to check with Toyota dealership or visit the National Highway Traffic Safety Administration (NHTSA) website for any recalls or service bulletins related to this specific issue.