AutoCodes – Generic – B2A0E

B2A0E Code - Mute Line Circuit

Quick Answer

Any of the following conditions occurs continuously for five seconds or more after the ignition switch is turned to ON when DCM does not mute the audio or navigation system: Current in the mute line is less than 1 mA. Common causes include Faulty Data Communication Module (DCM), Data Communication Module (DCM) harness is open or shorted, Data Communication Module (DCM) 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: B2A0E indicates Mute Line Circuit.
Common causes: Common causes include Faulty Data Communication Module (DCM), Data Communication Module (DCM) harness is open or shorted, Data Communication Module (DCM) 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 2,159

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 B2A0E Description

OBDII Code B2A0E - Mute Line Circuit - AutoCodes.com — B2A0E Code - Mute Line Circuit

What does this mean?

What are the Possible Causes of the DTC B2A0E?

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

How to Fix the DTC B2A0E?

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 B2A0E 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 B2A0E code?

Need more information on how to fix the B2A0E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2A0E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2A0E Subaru — Mute Line Circuit

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 B2A0E Code

1. What are the common symptoms of OBDII code B2A0E (Mute Line Circuit)?

- Common symptoms include issues with the vehicle's audio system, such as no sound or distorted sound coming from the speakers.

2. What does the OBDII code B2A0E (Mute Line Circuit) indicate?

- This code indicates a problem with the mute line circuit in the vehicle's audio system, which controls the sound output.

3. What are the possible causes of OBDII code B2A0E (Mute Line Circuit)?

- Possible causes include a faulty mute line switch, wiring issues, a damaged audio control module, or a malfunctioning amplifier.

4. How can I diagnose the issue related to OBDII code B2A0E (Mute Line Circuit)?

- You can diagnose the issue by checking the mute line switch, inspecting the wiring for any damage, testing the audio control module, and verifying the functionality of the amplifier.

5. How can I repair OBDII code B2A0E (Mute Line Circuit) in my vehicle?

- Repairing this code may involve replacing the mute line switch, repairing or replacing damaged wiring, replacing the audio control module, or addressing any issues with the amplifier.

6. Can OBDII code B2A0E (Mute Line Circuit) cause any other problems in the vehicle?

- While this code primarily affects the audio system, it may also impact other electronic components connected to the audio system, such as navigation systems or hands-free calling features.

7. Is it safe to continue driving with OBDII code B2A0E (Mute Line Circuit) unresolved?

- It is generally safe to continue driving with this code, but you may experience issues with the audio system until the problem is diagnosed and repaired.

8. How do I reset the OBDII code B2A0E (Mute Line Circuit) after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code from the system.

9. Are there any preventive measures to avoid encountering OBDII code B2A0E (Mute Line Circuit) in the future?

- Regular maintenance of the audio system, including checking for loose connections and addressing any unusual audio system behavior promptly, can help prevent this code from appearing.

10. Can a DIY enthusiast without professional automotive experience fix OBDII code B2A0E (Mute Line Circuit)?

- Depending on the specific cause of the issue, a DIY enthusiast with some knowledge of automotive electrical systems may be able to diagnose and repair this code. However, complex issues may require professional assistance.