AutoCodes – Toyota – P0504 2017 Toyota RAV4

P0504 2017 Toyota RAV4 Code - Brake Switch Circuit 'A' / 'B' Correlation

Quick Answer

The Stop Lamp Switch is a duplex system that transmits two signals: STP and ST1-. Common causes include Faulty Stop Lamp Switch (Brake Switch), Blown Stop Lamp Bulb, Stop Lamp 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 2017 Toyota RAV4 indicates Brake Switch Circuit 'A' / 'B' Correlation.
Common causes: Common causes include Faulty Stop Lamp Switch (Brake Switch), Blown Stop Lamp Bulb, Stop Lamp 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.

Save to My Repairs My Repairs

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

Code Popularity 464

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 Sep 01, 2022

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 P0504 2017 Toyota RAV4 Description

The Stop Lamp 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 2017 Toyota RAV4 - Brake Switch Circuit 'A' / 'B' Correlation - AutoCodes.com — P0504 2017 Toyota RAV4 Code - Brake Switch Circuit 'A' / 'B' Correlation

What does this mean?

What are the Possible Causes of the DTC P0504 2017 Toyota RAV4?

Faulty Stop Lamp Switch (Brake Switch)
Blown Stop Lamp Bulb
Stop Lamp Switch harness open or shorted
Stop Lamp Switch circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0504 2017 Toyota RAV4?

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 P0504 2017 Toyota RAV4 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 2017 Toyota RAV4 code?

Need more information on how to fix the P0504 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0504 2017 Toyota RAV4 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 P0504 2017 Toyota RAV4 Code

What does the OBDII code P0504 mean on a 2017 Toyota RAV4?

1. P0504 indicates a malfunction in the brake switch circuit, specifically a correlation issue between the signals from Brake Switch Circuit 'A' and 'B'. 2.

What are the symptoms of code P0504 in a 2017 Toyota RAV4?

Common symptoms include the brake lights not functioning properly, the vehicle not starting, or issues with cruise control operation. 3.

What causes the P0504 code in a 2017 Toyota RAV4?

The most common causes are a faulty brake light switch, damaged or corroded wiring, poor electrical connections, or a misaligned brake pedal switch. 4.

Can I drive my 2017 Toyota RAV4 with the P0504 code?

Driving with this code is not recommended as it may affect the brake lights and cruise control, posing a safety risk to you and others on the road. 5.

How do I diagnose the P0504 code on a 2017 Toyota RAV4?

Diagnosis involves checking the brake light switch, inspecting the wiring and connectors, and testing for proper voltage and continuity in the brake switch circuits. 6.

How do I fix the P0504 code on a 2017 Toyota RAV4?

Repairs may include replacing the brake light switch, repairing damaged wiring, cleaning corroded connectors, or adjusting the brake pedal switch alignment. 7.

How much does it cost to fix the P0504 code on a 2017 Toyota RAV4?

Repair costs can range from $50 to $200, depending on whether the issue is just a switch replacement or involves more extensive wiring repairs. 8.

Can a bad brake light switch trigger the P0504 code on a 2017 Toyota RAV4?

Yes, a faulty or misaligned brake light switch is one of the most common causes of the P0504 code. 9.

Does the P0504 code affect the ABS or traction control systems on a 2017 Toyota RAV4?

Yes, the P0504 code can sometimes disable the ABS or traction control systems because these systems rely on accurate brake switch signals. 10.

Will clearing the P0504 code solve the problem on a 2017 Toyota RAV4?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return. Proper diagnosis and repairs are necessary.