AutoCodes – Toyota – P0504 2010 Toyota Camry

P0504 2010 Toyota Camry Code - Brake Switch Circuit 'A' / 'B' Correlation

Quick Answer

The stoplight switch is a duplex system that transmits two signals: STP and ST1-. Common causes include Faulty stop lamp switch, Blown stop lamp bulb, Brake switch harness open or shorted. 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: P0504 2010 Toyota Camry indicates Brake Switch Circuit 'A' / 'B' Correlation.
Common causes: Common causes include Faulty stop lamp switch, Blown stop lamp bulb, Brake switch harness open or shorted.
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.

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Code Popularity 13,047

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Basic DIY (1 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 31, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0504 2010 Toyota Camry Description

The stoplight switch is a duplex system that transmits two signals: STP and ST1-. These two signals are used by the Engine Control Module (ECM) to monitor whether or not the brake system is working properly. If the signals, which indicate the brake pedal is being depressed and released, are detected simultaneously, the ECM interprets this as a malfunction in the stoplight switch and sets the Diagnostic Trouble Code (DTC).

OBDII Code P0504 2010 Toyota Camry - Brake Switch Circuit 'A' / 'B' Correlation - AutoCodes.com — P0504 2010 Toyota Camry Code - Brake Switch Circuit 'A' / 'B' Correlation

What does this mean?

What are the Possible Causes of the DTC P0504 2010 Toyota Camry?

Faulty stop lamp switch
Blown stop lamp bulb
Brake switch harness open or shorted
Brake switch circuit poor electrical connection
STOP fuse
IGN fuse

How to Fix the DTC P0504 2010 Toyota Camry?

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 does this mean?

Code Tech Notes

Check to see if the bulbs are good if they are good check the STOP fuse and IGN fuse, if they are good most likely the STOP light switch (near the brake pedal) is bad if there is no wiring issues.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0504 2010 Toyota Camry 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 P0504 2010 Toyota Camry code?

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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 P0504 2010 Toyota Camry Code

1. What does the OBDII code P0504 on a 2010 Toyota Camry indicate?

The code P0504 for a 2010 Toyota Camry indicates a Brake Switch Circuit 'A' / 'B' Correlation issue.

2. What are the common symptoms of a P0504 error on a 2010 Toyota Camry?

Common symptoms of a P0504 code on a 2010 Toyota Camry may include the inability to shift out of Park, cruise control not working, and the brake lights staying on all the time.

3. What are the possible causes of a P0504 error on a 2010 Toyota Camry?

Possible causes of a P0504 code on a 2010 Toyota Camry include a faulty brake light switch, wiring issues in the brake switch circuit, or a malfunctioning brake control module.

4. How can I diagnose a P0504 error on my 2010 Toyota Camry?

To diagnose a P0504 code on a 2010 Toyota Camry, you can start by checking the brake light switch for proper operation, inspecting the wiring for any damage, and using an OBDII scanner to read the error code.

5. Can I continue driving my 2010 Toyota Camry with a P0504 error code?

It is not recommended to drive your 2010 Toyota Camry with a P0504 error code, as it can affect crucial systems like shifting and braking. It's best to address the issue promptly.

6. How do I repair a P0504 error on a 2010 Toyota Camry?

Repairing a P0504 code on a 2010 Toyota Camry may involve replacing the brake light switch, repairing any damaged wiring, or recalibrating the brake control module.

7. Can a DIY enthusiast fix a P0504 error on a 2010 Toyota Camry?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix a P0504 error on a 2010 Toyota Camry by following repair guides and instructions carefully.

8. How much does it cost to repair a P0504 error on a 2010 Toyota Camry?

The cost of repairing a P0504 code on a 2010 Toyota Camry can vary depending on the specific issue, parts needed, and labor costs, but it may range from $100 to $300 or more.

9. Will resetting the error code make the P0504 issue go away on a 2010 Toyota Camry?

Simply resetting the error code may not resolve the underlying issue causing the P0504 code on a 2010 Toyota Camry. It's important to diagnose and address the root cause of the problem.

10. How long does it take to repair a P0504 error on a 2010 Toyota Camry?

The time it takes to repair a P0504 code on a 2010 Toyota Camry can vary based on the specific problem and repair process, but it may take anywhere from 1 to 3 hours in a repair shop.