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B28A3 Subaru Code - EyeSight Communication

Quick Answer

The B28A3 code for Subaru vehicles relates to an issue with the EyeSight communication system. Common causes include Faulty wiring connections within the EyeSight system, Sensor malfunctions or calibration issues, Software glitches in the control modules. 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
B28A3 Subaru indicates EyeSight Communication.
Common causes
Common causes include Faulty wiring connections within the EyeSight system, Sensor malfunctions or calibration issues, Software glitches in the control modules.
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 11, 2024
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Code B28A3 Subaru Description

The B28A3 code for Subaru vehicles relates to an issue with the EyeSight communication system. EyeSight is Subaru's advanced driver-assist system that uses cameras and sensors to provide features such as adaptive cruise control, lane departure warning, and pre-collision braking. When this code appears, it indicates a communication problem within the EyeSight system. This can disrupt the proper functioning of the various safety features, potentially compromising the vehicle's overall safety.

OBDII Code B28A3 Subaru - EyeSight Communication
B28A3 Subaru Code - EyeSight Communication

Common Causes of B28A3 Subaru

  1. Faulty wiring connections within the EyeSight system
  2. Sensor malfunctions or calibration issues
  3. Software glitches in the control modules
  4. Damage to the cameras or sensors
  5. Electronic control unit (ECU) failure

Symptoms of B28A3 Subaru

  1. Loss of adaptive cruise control functionality
  2. Lane departure warning system not working
  3. Pre-collision braking system failure
  4. EyeSight warning light illuminated on the dashboard

How to Fix B28A3 Subaru

  1. Diagnose the specific cause of the communication issue using specialized diagnostic equipment.
  2. Inspect and test the wiring connections within the EyeSight system for any faults or damage.
  3. Check and calibrate the sensors and cameras to ensure they are functioning correctly.
  4. Update or reprogram the control modules with the latest software to address any glitches.
  5. Replace any damaged components, such as sensors or control modules, as needed to restore proper communication within the EyeSight system.

Cost to Fix B28A3 Subaru

The typical repair costs for addressing the B28A3 code on a Subaru vehicle can range from $200 to $800, depending on the extent of the issue and the specific components that require repair or replacement. This estimate includes parts and labor, but actual costs may vary based on factors such as the location of the repair shop, the vehicle's make and model, and the availability of parts. It's recommended to consult with a qualified mechanic or dealership for a more accurate cost estimate based on the individual circumstances of the repair.

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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 B28A3 Subaru Code

1. What are the common symptoms of OBDII code B28A3 in a Subaru with EyeSight Communication?

The common symptoms include the EyeSight system not functioning properly, warning lights on the dashboard, and potential issues with adaptive cruise control.

2. What can cause the OBDII code B28A3 to appear in a Subaru EyeSight system?

This code is typically caused by a communication error between the EyeSight system components, such as faulty sensors, wiring issues, or a malfunctioning control module.

3. How can I diagnose and repair OBDII code B28A3 in my Subaru with EyeSight?

Diagnosing this code may require specialized diagnostic equipment to pinpoint the exact cause of the communication error. Repair involves fixing or replacing the faulty components and resetting the system.

4. Can I continue driving my Subaru if OBDII code B28A3 is present?

While you may still be able to drive your vehicle with this code, it is not recommended as it may affect the functionality of the EyeSight system, which is designed to enhance safety features.

5. Are there any DIY tips for troubleshooting OBDII code B28A3 in a Subaru EyeSight system?

You can start by checking the connections and wiring related to the EyeSight components for any visible damage or loose connections. However, for a thorough diagnosis and repair, it is recommended to consult a professional mechanic.

6. How much does it typically cost to repair OBDII code B28A3 in a Subaru with EyeSight?

The cost of repair can vary depending on the specific cause of the communication error and the parts that need replacement. It is advisable to get a diagnostic assessment from a qualified technician for an accurate estimate.

7. Will resetting the OBDII code B28A3 in my Subaru EyeSight system make it go away permanently?

Simply resetting the code may temporarily clear the warning lights, but if the underlying issue causing the code is not addressed, it is likely to reappear. Proper diagnosis and repair are essential for a permanent solution.

8. Is OBDII code B28A3 specific to Subaru vehicles with EyeSight, or can it occur in other vehicles?

This particular code is specific to Subaru vehicles equipped with the EyeSight driver-assist system. Other vehicle manufacturers may have different codes related to similar communication issues.

9. How long does it typically take to repair OBDII code B28A3 in a Subaru EyeSight system?

The repair time can vary depending on the extent of the issue and the availability of replacement parts. In some cases, it may be a quick fix, while more complex problems may require more time for diagnosis and repair.

10. Can I prevent OBDII code B28A3 from reoccurring in my Subaru EyeSight system?

Regular maintenance and inspections of the EyeSight system components can help prevent issues that may trigger this code. Promptly addressing any warning lights or unusual behavior can also help avoid the recurrence of this code.

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