AutoCodes – Ford – B2479 Ford

B2479 Ford Code - Brake Park Switch Circuit Short To Ground

Quick Answer

The Instrument Cluster (IC) uses 3 basic messaged inputs to control the brake warning indicator. Common causes include Faulty Brake Park Switch, Brake Park Switch harness is open or shorted, Brake Park 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: B2479 Ford indicates Brake Park Switch Circuit Short To Ground.
Common causes: Common causes include Faulty Brake Park Switch, Brake Park Switch harness is open or shorted, Brake Park 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.

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Code Popularity 8,351

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2479 Ford Description

The Instrument Cluster (IC) uses 3 basic messaged inputs to control the brake warning indicator. The first 2 are the parking brake warning indicator switch and brake fluid level switch. The third is for the Electronic Brake Distribution (EBD), controlled by the ABS. The parking brake warning indicator switch and the brake fluid level switch status are sent from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus. The EBD message is sent from the ABS module over the High Speed Controller Area Network (HS-CAN) communication bus lines.

OBDII Code B2479 Ford - Brake Park Switch Circuit Short To Ground - AutoCodes.com — B2479 Ford Code - Brake Park Switch Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B2479 Ford?

Faulty Brake Park Switch
Brake Park Switch harness is open or shorted
Brake Park Switch circuit poor electrical connection

How to Fix the DTC B2479 Ford?

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 B2479 Ford 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.

Frequently Asked Questions about B2479 Ford Code

1. What are the common symptoms of OBDII code B2479 Ford (Brake Park Switch Circuit Short To Ground)?

The common symptoms include the brake warning light illuminated on the dashboard, the inability to shift out of park, and possible issues with the vehicle's brake lights.

2. What can cause the OBDII code B2479 Ford to appear?

This code usually appears due to a short to ground in the brake park switch circuit. It can be caused by damaged wiring, a faulty brake park switch, or a problem with the vehicle's electrical system.

3. How can I diagnose the Brake Park Switch Circuit Short To Ground issue?

Diagnosing this issue involves checking the wiring and connectors in the brake park switch circuit, testing the brake park switch for proper functionality, and inspecting the vehicle's electrical system for any faults.

4. Can I continue driving my vehicle with the B2479 Ford trouble code?

It is not recommended to continue driving your vehicle with this code present, as it can affect the proper operation of the brake system and potentially lead to unsafe driving conditions.

5. How can I repair the Brake Park Switch Circuit Short To Ground issue?

Repairing this issue typically involves repairing or replacing any damaged wiring, replacing the faulty brake park switch, and ensuring proper electrical connections are in place.

6. Is it possible to clear the B2479 Ford trouble code without fixing the underlying issue?

Clearing the trouble code without addressing the underlying problem will likely result in the code reappearing once the issue is detected again by the vehicle's onboard diagnostic system.

7. Can a DIY enthusiast fix the Brake Park Switch Circuit Short To Ground problem?

While some DIY enthusiasts may be able to diagnose and repair this issue themselves, it is recommended to seek professional help, especially when dealing with electrical components and systems.

8. How much does it typically cost to repair the B2479 Ford code?

The cost of repairing the B2479 Ford code can vary depending on the extent of the damage and the specific components that need to be replaced. It is advisable to consult a mechanic for an accurate estimate.

9. Are there any preventive measures to avoid the Brake Park Switch Circuit Short To Ground problem?

Regularly inspecting the brake system, checking for any signs of wiring damage, and ensuring proper maintenance of the electrical components can help prevent issues like the Brake Park Switch Circuit Short To Ground.

10. Can extreme weather conditions contribute to the appearance of the B2479 Ford trouble code?

Extreme weather conditions, such as excessive heat or moisture, can sometimes lead to electrical issues like shorts to ground in the brake park switch circuit, potentially triggering the B2479 Ford trouble code.