AutoCodes – Subaru – B2A04 Subaru

B2A04 Subaru Code - Microphone Circuit

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Microphone Circuit is not to factory specifications. Common causes include Faulty Microphone, Microphone harness is open or shorted, Microphone 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: B2A04 Subaru indicates Microphone Circuit.
Common causes: Common causes include Faulty Microphone, Microphone harness is open or shorted, Microphone 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 1,290

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 Feb 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2A04 Subaru Description

The Diagnostic Trouble Code (DTC) sets when the Microphone Circuit is not to factory specifications.

OBDII Code B2A04 Subaru - Microphone Circuit - AutoCodes.com — B2A04 Subaru Code - Microphone Circuit

What does this mean?

What are the Possible Causes of the DTC B2A04 Subaru?

Faulty Microphone
Microphone harness is open or shorted
Microphone circuit poor electrical connection
Faulty Data Communication Module (DCM)

How to Fix the DTC B2A04 Subaru?

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 B2A04 Subaru 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 B2A04 Subaru 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 B2A04 Subaru Code

1. What is OBDII code B2A04 in a Subaru related to the Microphone Circuit?

- OBDII code B2A04 in a Subaru is related to the Microphone Circuit, indicating an issue with the vehicle's microphone system.

2. What are common symptoms of OBDII code B2A04 in a Subaru?

- Common symptoms of OBDII code B2A04 in a Subaru may include malfunctioning voice control features, poor call quality during phone calls, or complete loss of microphone functionality.

3. What are possible causes of OBDII code B2A04 in a Subaru?

- Possible causes of OBDII code B2A04 in a Subaru may include a faulty microphone, wiring issues in the microphone circuit, a malfunctioning microphone control module, or software glitches.

4. How can I diagnose the issue related to OBDII code B2A04 in my Subaru?

- To diagnose the issue related to OBDII code B2A04 in your Subaru, you can start by checking the microphone connections, inspecting the wiring for any damage, and using a diagnostic scanner to read any stored fault codes.

5. Can I repair OBDII code B2A04 in a Subaru myself?

- Depending on the exact cause of OBDII code B2A04 in your Subaru, you may be able to repair it yourself by replacing the faulty microphone, repairing damaged wiring, or resetting the microphone control module.

6. Is OBDII code B2A04 in a Subaru a serious issue that needs immediate attention?

- OBDII code B2A04 in a Subaru is not typically a serious issue that requires immediate attention, but it can affect the convenience and functionality of voice control features and hands-free calling in the vehicle.

7. Can OBDII code B2A04 in a Subaru cause other problems if left unaddressed?

- If left unaddressed, OBDII code B2A04 in a Subaru can potentially cause inconvenience by affecting the microphone functionality, but it is unlikely to lead to any major mechanical or safety issues.

8. Are there any temporary fixes for OBDII code B2A04 in a Subaru?

- Temporary fixes for OBDII code B2A04 in a Subaru may include disconnecting and reconnecting the microphone to reset the system, checking for loose connections, or updating the audio system software.

9. Is it possible to prevent OBDII code B2A04 from occurring in a Subaru?

- While some causes of OBDII code B2A04 may be unavoidable, regular maintenance checks, keeping the microphone area clean, and ensuring proper handling of the microphone can help prevent this issue from occurring.

10. Should I reset the OBDII code B2A04 in my Subaru after repairing the issue?

- Yes, after repairing the issue related to OBDII code B2A04 in your Subaru, it is recommended to clear the fault codes using an OBDII scanner to reset the system and ensure the problem has been resolved.