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Engine-Codes – Subaru – B2817 Subaru

B2817 Subaru Code - Brake Lamp

Quick Answer

The B2817 code for Subaru vehicles specifically relates to an issue with the brake lamp. Common causes include Faulty brake light bulb, Damaged wiring harness, Malfunctioning brake light switch. 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
B2817 Subaru indicates Brake Lamp.
Common causes
Common causes include Faulty brake light bulb, Damaged wiring harness, Malfunctioning brake light switch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 20, 2024
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Code B2817 Subaru Description

The B2817 code for Subaru vehicles specifically relates to an issue with the brake lamp. When this code is triggered, it indicates that there is a malfunction or fault in the brake lamp circuit. The brake lamp is a crucial safety feature in any vehicle, as it signals to other drivers when the vehicle is slowing down or stopping. A malfunctioning brake lamp can pose a significant risk on the road, as it may not properly alert other drivers of your intentions to slow down or stop, increasing the likelihood of a rear-end collision.

OBDII Code B2817 Subaru - Brake Lamp
B2817 Subaru Code - Brake Lamp

Common Causes of B2817 Subaru

  1. Faulty brake light bulb.
  2. Damaged wiring harness.
  3. Malfunctioning brake light switch.
  4. Issue with the vehicle's body control module.
  5. Corrosion or poor connections in the brake lamp circuit.

Symptoms of B2817 Subaru

  1. Brake lights not illuminating when the brake pedal is pressed.
  2. Brake lights staying on constantly, even when the brake pedal is not pressed.
  3. Intermittent operation of the brake lights.
  4. Dashboard warning light indicating a brake lamp malfunction.

How to Fix B2817 Subaru

  1. Begin by visually inspecting the brake light bulbs to check for any signs of damage or burnout. Replace any faulty bulbs.
  2. Inspect the wiring harness connected to the brake lights for any visible damage or corrosion. Repair or replace any damaged wiring.
  3. Test the brake light switch to ensure it is functioning correctly. Replace the switch if necessary.
  4. Use a diagnostic tool to check for any fault codes in the body control module related to the brake lamp circuit. Address any identified issues.
  5. Clear the B2817 code from the vehicle's computer system and test the brake lights to ensure they are functioning properly.

Cost to Fix B2817 Subaru

The cost of repairing a B2817 code related to the brake lamp can vary depending on the specific cause of the issue. On average, you can expect to pay between $50 to $200 for parts, including brake light bulbs, wiring harnesses, brake light switches, or body control modules. Labor costs can range from $80 to $150 per hour, with the total repair bill potentially amounting to $150 to $500 or more. It's important to note that these are rough estimates, and actual costs may vary based on the location, vehicle make and model, and the extent of the repairs needed. Be sure to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

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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 B2817 Subaru Code

1. What are the common symptoms of OBDII code B2817 in a Subaru related to the brake lamp?

When OBDII code B2817 triggers in a Subaru, you may notice that the brake lamp on the vehicle's dashboard remains illuminated.

2. What are the possible causes of OBDII code B2817 in a Subaru?

The most common cause of OBDII code B2817 in a Subaru is a malfunction in the brake lamp switch or its wiring.

3. How can I diagnose the issue related to OBDII code B2817 in my Subaru?

To diagnose the issue related to OBDII code B2817, you can start by checking the brake lamp switch for proper functionality and inspecting the wiring for any damage or loose connections.

4. Can I still drive my Subaru if OBDII code B2817 is triggered?

While you can still drive your Subaru with OBDII code B2817, it is recommended to address the issue promptly to ensure the brake lamp functions correctly for safety reasons.

5. Are there any simple repair tips for fixing OBDII code B2817 in a Subaru?

A common repair tip for OBDII code B2817 is to first check and adjust the brake lamp switch position as it may have become misaligned.

6. Is OBDII code B2817 in a Subaru a serious issue?

OBDII code B2817 in a Subaru is not a critical issue in terms of vehicle operation but should be addressed to ensure the brake lamp functions properly for safety on the road.

7. Can OBDII code B2817 in a Subaru be reset without fixing the underlying problem?

While you can reset OBDII code B2817 in a Subaru, it is recommended to fix the root cause of the issue to prevent the code from reoccurring.

8. How much does it typically cost to repair OBDII code B2817 in a Subaru?

The cost to repair OBDII code B2817 in a Subaru can vary depending on the exact cause of the issue, but it may involve a simple adjustment or replacement of the brake lamp switch.

9. Are there any recalls or technical service bulletins related to OBDII code B2817 in Subaru vehicles?

For specific information on recalls or technical service bulletins related to OBDII code B2817 in Subaru vehicles, it is recommended to check with a Subaru dealership or visit the manufacturer's website.

10. Can a DIY enthusiast fix OBDII code B2817 in a Subaru, or is it best left to professionals?

Depending on your level of expertise, DIY enthusiasts may be able to address OBDII code B2817 in a Subaru by following repair guides and using basic tools. However, if you are unsure, it is recommended to seek assistance from a professional mechanic.

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