AutoCodes – Generic – B1485

B1485 Code - Brake Pedal Input Circuit Battery 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
B1485 indicates Brake Pedal Input Circuit Battery 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 29,371
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 14, 2019
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Code B1485 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 B1485 - Brake Pedal Input Circuit Battery Short - AutoCodes.com
B1485 Code - Brake Pedal Input Circuit Battery Short

What are the Possible Causes of the DTC B1485?

  • 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 B1485?

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 B1485 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 B1485 code?

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Need Help with the Code?

Get the B1485 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 B1485 Code

1. What are the common symptoms of OBDII code B1485 (Brake Pedal Input Circuit Battery Short)?

The common symptoms of code B1485 include illuminated brake warning light on the dashboard, non-functional brake lights, and potential issues with the vehicle's brake system.

2. What could cause the OBDII code B1485 to trigger?

The OBDII code B1485 can be triggered by a battery short in the brake pedal input circuit, which may be caused by damaged wiring, a faulty brake light switch, or a corroded electrical connection.

3. How can I diagnose the OBDII code B1485?

To diagnose the OBDII code B1485, you can use an OBDII scanner to retrieve the specific fault code. Additionally, visually inspect the brake pedal input circuit for any visible damage or corrosion.

4. What should I do if I encounter the OBDII code B1485?

If you encounter the OBDII code B1485, it is recommended to first check the brake light switch and associated wiring for any issues. Repair or replace any damaged components to resolve the code.

5. Can I continue driving with the OBDII code B1485 present?

It is not advisable to continue driving with the OBDII code B1485 present, as it indicates a potential issue with the brake pedal input circuit that could affect the proper functioning of the brake lights and the vehicle's braking system.

6. Are there any safety concerns associated with the OBDII code B1485?

Yes, there are safety concerns associated with code B1485, as non-functional brake lights can decrease visibility to other drivers and increase the risk of accidents. It is important to address this issue promptly.

7. Can I repair the OBDII code B1485 myself?

Depending on your level of automotive knowledge and experience, you may be able to repair the OBDII code B1485 yourself by inspecting and repairing the brake pedal input circuit components. However, professional help is recommended if you are unsure.

8. Will resetting the OBDII code B1485 make it go away permanently?

Simply resetting the OBDII code B1485 without addressing the underlying issue will not make it go away permanently. It is crucial to diagnose and repair the root cause of the code to prevent it from reoccurring.

9. How much does it typically cost to repair the OBDII code B1485?

The cost of repairing the OBDII code B1485 can vary depending on the extent of the damage and the specific components that need to be replaced. It is recommended to obtain quotes from automotive professionals for an accurate estimate.

10. Can the OBDII code B1485 affect the overall performance of my vehicle?

While code B1485 primarily relates to the brake pedal input circuit and brake lights, ignoring this issue can potentially lead to problems with the vehicle's overall electrical system and safety features. It is important to address it promptly.

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