AutoCodes – Subaru – B2A0E Subaru

B2A0E Subaru 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 Subaru 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 4,345

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 Subaru Description

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

What does this mean?

What are the Possible Causes of the DTC B2A0E Subaru?

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 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 B2A0E 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.

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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 B2A0E Subaru Code

1. What is OBDII code B2A0E in a Subaru related to the Mute Line Circuit?

The B2A0E code in a Subaru relates to a fault in the Mute Line Circuit, which is responsible for muting the audio output when receiving a phone call.

2. What are common symptoms of a B2A0E code in a Subaru?

Common symptoms of a B2A0E code may include no audio output during phone calls, distorted sound quality, or the audio system not muting when a call is received.

3. What are possible causes of the B2A0E code in a Subaru?

Possible causes of the B2A0E code include a faulty mute line circuit, wiring issues, a defective audio control module, or a malfunctioning microphone.

4. How can I diagnose a B2A0E code in my Subaru?

Diagnosing a B2A0E code typically involves inspecting the mute line circuit, checking the wiring for any damage, testing the audio control module, and ensuring the microphone is functioning correctly.

5. Can I repair a B2A0E code in my Subaru on my own?

Depending on your experience and tools, you may be able to repair a B2A0E code yourself by addressing the specific issue identified during diagnosis, such as replacing a faulty component or repairing damaged wiring.

6. Is it safe to continue driving with a B2A0E fault code in my Subaru?

It is generally safe to continue driving with a B2A0E fault code, as it primarily affects the audio system's phone call functionality and does not impact the vehicle's drivability or safety.

7. How much does it cost to fix a B2A0E fault in a Subaru?

The cost of fixing a B2A0E fault in a Subaru can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed.

8. Will resetting the OBDII codes clear a B2A0E fault in my Subaru?

Resetting the OBDII codes may temporarily clear the B2A0E fault, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again.

9. Can extreme weather conditions trigger a B2A0E fault in a Subaru?

Extreme weather conditions such as exposure to excessive heat or moisture may potentially contribute to a B2A0E fault by affecting the electrical components involved in the mute line circuit.

10. How can I prevent a B2A0E fault from occurring in my Subaru?

To help prevent a B2A0E fault, it's advisable to regularly maintain your vehicle's audio system, avoid exposing it to harsh environmental conditions, and address any audio-related issues promptly to prevent further damage.