AutoCodes – Ford – P0504 2010 Ford Fusion

P0504 2010 Ford Fusion 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 Brake Pedal Switch (BPS) (Stop Lamp Switch), Faulty Brake Pedal Position (BPP) Switch, Brake Pedal Switch harness is 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 Ford Fusion indicates Brake Switch Circuit 'A' / 'B' Correlation.
Common causes
Common causes include Faulty Brake Pedal Switch (BPS) (Stop Lamp Switch), Faulty Brake Pedal Position (BPP) Switch, Brake Pedal Switch harness is 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,467
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 31, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0504 2010 Ford Fusion 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 2010 Ford Fusion - Brake Switch Circuit 'A' / 'B' Correlation - AutoCodes.com
P0504 2010 Ford Fusion Code - Brake Switch Circuit 'A' / 'B' Correlation

What are the Possible Causes of the DTC P0504 2010 Ford Fusion?

  • Faulty Brake Pedal Switch (BPS) (Stop Lamp Switch)
  • Faulty Brake Pedal Position (BPP) Switch
  • Brake Pedal Switch harness is open or shorted
  • Brake Pedal Switch circuit poor electrical connection

How to Fix the DTC P0504 2010 Ford Fusion?

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 2010 Ford Fusion 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 Ford Fusion code?

Need more information on how to fix the P0504 2010 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0504 2010 Ford Fusion 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 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P0504 in a 2010 Ford Fusion?

When OBDII code P0504 appears in a 2010 Ford Fusion, common symptoms may include issues with the vehicle's cruise control system, inability to shift out of park, and the brake lights staying on continuously.

2. What does the OBDII code P0504 Brake Switch Circuit 'A' / 'B' Correlation mean for a 2010 Ford Fusion?

The P0504 code for a 2010 Ford Fusion indicates a discrepancy between the signals from the brake switch 'A' and brake switch 'B', which can affect various vehicle systems.

3. What are the possible causes of OBDII code P0504 in a 2010 Ford Fusion?

Common causes of code P0504 in a 2010 Ford Fusion include a faulty brake light switch, wiring issues in the brake switch circuit, or a malfunction in the vehicle's electronic control module.

4. How serious is OBDII code P0504 in a 2010 Ford Fusion?

While code P0504 may not cause immediate drivability issues in a 2010 Ford Fusion, it can affect the operation of important safety features like the brake lights and cruise control, so it should be addressed promptly.

5. Can I continue to drive my 2010 Ford Fusion with OBDII code P0504?

It is generally safe to drive your 2010 Ford Fusion with code P0504, but it's important to address the underlying issue promptly to prevent potential safety hazards and further damage to vehicle systems.

6. How can I diagnose OBDII code P0504 in a 2010 Ford Fusion?

Diagnosing code P0504 in a 2010 Ford Fusion typically involves checking the brake light switch for proper operation, inspecting the wiring for any damage, and using a diagnostic scanner to analyze the signal inputs from the brake switches.

7. How can I repair OBDII code P0504 in a 2010 Ford Fusion?

To repair code P0504 in a 2010 Ford Fusion, you may need to replace the faulty brake light switch, repair any damaged wiring in the brake switch circuit, or reset the electronic control module to clear the code.

8. Can a DIY enthusiast fix OBDII code P0504 in a 2010 Ford Fusion?

While some DIY enthusiasts may have the skills to address code P0504 in a 2010 Ford Fusion, it's recommended to consult a professional mechanic for accurate diagnosis and repair to ensure the issue is resolved correctly.

9. How much does it cost to fix OBDII code P0504 in a 2010 Ford Fusion?

The cost to fix OBDII code P0504 in a 2010 Ford Fusion can vary depending on the underlying cause, parts needed for repair, and labor costs. It's advisable to obtain quotes from different repair shops for an accurate estimate.

10. Can resetting the OBDII system clear code P0504 in a 2010 Ford Fusion?

Resetting the OBDII system may temporarily clear code P0504 in a 2010 Ford Fusion, but if the underlying issue with the brake switch circuit is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause of the problem.

Discuss the causes and fixes for P0504 2010 Ford Fusion OBDII Code

Code P0504 2010 Ford Fusion comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play