AutoCodes – Generic – B1486

B1486 Code - Brake Pedal Input Circuit Ground Short

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: B1486 indicates Brake Pedal Input Circuit Ground Short.
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 6,626

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 B1486 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 B1486 - Brake Pedal Input Circuit Ground Short - AutoCodes.com — B1486 Code - Brake Pedal Input Circuit Ground Short

What does this mean?

What are the Possible Causes of the DTC B1486?

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 B1486?

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 B1486 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 B1486 code?

Need more information on how to fix the B1486 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1486 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1486 Ford — Brake Pedal Input Circuit Ground Short
B1486 Hyundai — 2nd Stage Passenger Airbag Resistance Too Low
B1486 KIA — 2nd Stage Passenger Airbag Resistance Too Low
B1486 Lincoln — Brake Pedal Input Circuit Ground Short
B1486 Mercury — Brake Pedal Input Circuit Ground Short

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 B1486 Code

1. What are the common symptoms of OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

The common symptoms of code B1486 include the brake lights staying on continuously, the inability to shift out of park, and the illumination of the brake warning light on the dashboard.

2. What are the possible causes of OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

Possible causes of code B1486 include a short circuit in the brake pedal switch wiring, a faulty brake pedal position sensor, or a damaged wiring harness.

3. How can I diagnose OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

To diagnose code B1486, you can use a diagnostic scan tool to read the fault codes, visually inspect the brake pedal switch and wiring for any visible damage, and perform a continuity test on the circuit to identify any shorts.

4. Can I still drive my vehicle with OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

It is not recommended to drive your vehicle with code B1486 as it can affect the proper functioning of the brake system, potentially leading to unsafe driving conditions.

5. How can I repair OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

To repair code B1486, you may need to replace the brake pedal position sensor, repair any damaged wiring, or reset the fault codes using a diagnostic scan tool after addressing the underlying issue.

6. Will OBDII code B1486 (Brake Pedal Input Circuit Ground Short) cause my brakes to fail?

While code B1486 itself does not directly cause brake failure, it can lead to issues with the brake lights and brake pedal sensor, affecting the overall functionality of the brake system.

7. Can a DIY enthusiast fix OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

Depending on your level of experience and access to tools, a DIY enthusiast may be able to address code B1486 by following repair guides and tutorials, but professional help is recommended for accurate diagnosis and repair.

8. Is it safe to ignore OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

Ignoring code B1486 can lead to safety concerns, such as unpredictable brake light behavior and potential issues with the brake system operation, so it is best to address the problem promptly.

9. How much does it typically cost to repair OBDII code B1486 (Brake Pedal Input Circuit Ground Short)?

The cost of repairing code B1486 can vary depending on the underlying issue, parts needed, and labor costs, but it is advisable to consult with a mechanic for a more accurate estimate.

10. Can OBDII code B1486 (Brake Pedal Input Circuit Ground Short) be intermittent?

Yes, code B1486 can be intermittent, meaning the issue may come and go, making it crucial to diagnose and repair the underlying cause to prevent potential safety hazards while driving.