AutoCodes – Generic – B2A0C

B2A0C Code - DCM Internal Fault

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Data Communication Module (DCM) is not to factory specifications. Common causes include Faulty Data Communication Module (DCM), Data Communication Module harness is open or shorted, Data Communication Module 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: B2A0C indicates DCM Internal Fault.
Common causes: Common causes include Faulty Data Communication Module (DCM), Data Communication Module harness is open or shorted, Data Communication Module 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 2,859

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 B2A0C Description

The Diagnostic Trouble Code (DTC) sets when the Data Communication Module (DCM) is not to factory specifications.

OBDII Code B2A0C - DCM Internal Fault - AutoCodes.com — B2A0C Code - DCM Internal Fault

What does this mean?

What are the Possible Causes of the DTC B2A0C?

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

How to Fix the DTC B2A0C?

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 B2A0C 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 B2A0C code?

Need more information on how to fix the B2A0C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2A0C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2A0C Subaru — DCM Internal Fault

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 B2A0C Code

1. What are the common symptoms of OBDII code B2A0C (DCM Internal Fault)?

The common symptoms of OBDII code B2A0C (DCM Internal Fault) may include erratic behavior of vehicle electronics, warning lights on the dashboard, and issues with the transmission.

2. What are the possible causes of OBDII code B2A0C (DCM Internal Fault)?

Possible causes of OBDII code B2A0C (DCM Internal Fault) include a faulty DCM (Door Control Module), damaged wiring or connectors, software issues, or a malfunctioning CAN bus system.

3. How can I diagnose OBDII code B2A0C (DCM Internal Fault)?

Diagnosing OBDII code B2A0C (DCM Internal Fault) usually involves using a diagnostic scanner to retrieve the code, inspecting the DCM and related components for physical damage, and conducting tests to determine the root cause of the internal fault.

4. Can OBDII code B2A0C (DCM Internal Fault) be repaired at home?

Repairing OBDII code B2A0C (DCM Internal Fault) at home may be challenging, as it often requires specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.

5. Is it safe to drive with OBDII code B2A0C (DCM Internal Fault) present?

It is not recommended to drive with OBDII code B2A0C (DCM Internal Fault) present, as it can lead to potential safety hazards and further damage to the vehicle's electronics systems. It is best to address the issue promptly.

6. How much does it typically cost to repair OBDII code B2A0C (DCM Internal Fault)?

The cost of repairing OBDII code B2A0C (DCM Internal Fault) can vary depending on the extent of the damage, the parts needed for replacement, and the labor charges. It is advisable to obtain quotes from multiple mechanics for an accurate estimate.

7. Can resetting the OBDII system clear the B2A0C code (DCM Internal Fault)?

Resetting the OBDII system may temporarily clear the B2A0C code (DCM Internal Fault), but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the fault.

8. How long does it take to repair OBDII code B2A0C (DCM Internal Fault)?

The repair time for OBDII code B2A0C (DCM Internal Fault) can vary depending on the complexity of the issue and the availability of parts. Some repairs may be completed in a few hours, while others may take longer.

9. Are there any recalls related to OBDII code B2A0C (DCM Internal Fault)?

Recalls related to OBDII code B2A0C (DCM Internal Fault) are rare, but it is advisable to check with the vehicle manufacturer or a certified dealership to see if there are any related recalls or service bulletins.

10. Can a faulty battery cause OBDII code B2A0C (DCM Internal Fault) to appear?

While a faulty battery can cause electrical issues in a vehicle, it is unlikely to directly trigger OBDII code B2A0C (DCM Internal Fault). It is important to diagnose the specific cause of the fault to address the issue effectively.