AutoCodes – Chrysler – P0504 Chrysler

P0504 Chrysler Code - Brake Switch Circuit 'A' / 'B' Correlation

Quick Answer

The Brake Pedal Switch (BPS) is sometimes referred to as the stop lamp switch. 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 Chrysler 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 4,894

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
Cost to Diagnose
Comments
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Code P0504 Chrysler Description

The Brake Pedal Switch (BPS) is sometimes referred to as the stop lamp switch. The BPS provides a signal to the Powertrain Control Module (PCM) indicating the brakes are applied. The BPS is normally open and mounted on the brake pedal support. The Powertrain Control Module does a comparison test between the Brake Pedal Switch and the Brake Pedal Position (BPP) switch. The Diagnostic Trouble Code (DTC) will set when the BPS and BPP are no to factory specifications.

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

What does this mean?

What are the Possible Causes of the DTC P0504 Chrysler?

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

How to Fix the DTC P0504 Chrysler?

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 Chrysler 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.

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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.