AutoCodes – Lincoln – B1484 Lincoln

B1484 Lincoln Code - Brake Pedal Input Open Circuit

Quick Answer

Fused battery voltage is supplied to the Brake Pedal Position (BPP) Switch from Smart Junction Box (SJB) fuse along the circuit. Common causes include Faulty Brake Pedal Position Switch, Brake Pedal Position Switch harness is open or shorted, Brake Pedal Position 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: B1484 Lincoln indicates Brake Pedal Input Open Circuit.
Common causes: Common causes include Faulty Brake Pedal Position Switch, Brake Pedal Position Switch harness is open or shorted, Brake Pedal Position 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 2,093

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 Apr 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1484 Lincoln Description

Fused battery voltage is supplied to the Brake Pedal Position (BPP) Switch from Smart Junction Box (SJB) fuse along the circuit. When the brake pedal is pressed, the BPP switch supplies fused battery voltage to the Anti-Lock Brake System (ABS) module, the Powertrain Control Module (PCM) and the SJB along the circuit.

OBDII Code B1484 Lincoln - Brake Pedal Input Open Circuit - AutoCodes.com — B1484 Lincoln Code - Brake Pedal Input Open Circuit

What does this mean?

What are the Possible Causes of the DTC B1484 Lincoln?

Faulty Brake Pedal Position Switch
Brake Pedal Position Switch harness is open or shorted
Brake Pedal Position Switch circuit poor electrical connection
Faulty Smart Junction Box (SJB)

How to Fix the DTC B1484 Lincoln?

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 B1484 Lincoln 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 B1484 Lincoln code?

Need more information on how to fix the B1484 Lincoln code? Get Access to Factory Service Manuals

Need Help with the 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 B1484 Lincoln Code

1. What are the common symptoms of OBDII code B1484 Lincoln (Brake Pedal Input Open Circuit)?

- Common symptoms include the brake lights staying on or not working at all, the cruise control not functioning properly, and the inability to shift out of Park.

2. What are the possible causes of the B1484 code in a Lincoln vehicle?

- The B1484 code in a Lincoln may be caused by a faulty brake pedal switch, damaged wiring or connectors related to the brake pedal circuit, or a malfunctioning body control module.

3. How can I diagnose the B1484 code in my Lincoln vehicle?

- To diagnose the B1484 code, start by checking the brake pedal switch for proper operation, inspecting the wiring and connectors for any damage, and using a diagnostic scan tool to retrieve trouble codes and monitor brake pedal input data.

4. Can I still drive my Lincoln with the B1484 code present?

- It is not recommended to drive your Lincoln with the B1484 code present, as it may affect crucial safety features like the brake lights and the ability to shift gears, leading to potential hazards on the road.

5. How do I repair the Brake Pedal Input Open Circuit issue in my Lincoln?

- Repair steps may include replacing the brake pedal switch, repairing or replacing damaged wiring or connectors, or reprogramming the body control module to resolve the B1484 code in your Lincoln.

6. Are there any DIY tips for troubleshooting the B1484 code in a Lincoln?

- As a DIY tip, you can start by visually inspecting the brake pedal switch and its connections, checking for any signs of wear or damage before proceeding with more advanced diagnostic procedures.

7. What tools may be needed to fix the B1484 code in a Lincoln?

- Tools that may be needed to fix the B1484 code in a Lincoln include a diagnostic scan tool, a multimeter for testing electrical circuits, basic hand tools for accessing components, and a flashlight for better visibility.

8. Is it common for the B1484 code to recur after repairs in a Lincoln?

- If the underlying issue causing the B1484 code, such as a faulty brake pedal switch or damaged wiring, is not properly addressed during repairs, it is possible for the code to recur in a Lincoln vehicle.

9. Can the B1484 code in a Lincoln be triggered by other issues besides the brake pedal circuit?

- While the B1484 code is primarily related to the brake pedal input circuit, it can also be triggered by issues with the body control module, wiring harnesses, or other components affecting the brake system in a Lincoln.

10. Is it necessary to reset the OBDII system after fixing the B1484 code in a Lincoln?

- It is recommended to clear the OBDII system after fixing the B1484 code in a Lincoln to reset the error codes and ensure that the repair was successful.