AutoCodes – Generic – B2A09

B2A09 Code - Telematics I-Call Button Circuit

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Telematics Button Circuit is not to factory specifications. Common causes include Faulty Telematics Button, Telematics Button harness is open or shorted, Telematics Button 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: B2A09 indicates Telematics I-Call Button Circuit.
Common causes: Common causes include Faulty Telematics Button, Telematics Button harness is open or shorted, Telematics Button 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 1,071

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 B2A09 Description

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

OBDII Code B2A09 - Telematics I-Call Button Circuit - AutoCodes.com — B2A09 Code - Telematics I-Call Button Circuit

What does this mean?

What are the Possible Causes of the DTC B2A09?

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

How to Fix the DTC B2A09?

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 B2A09 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 B2A09 code?

Need more information on how to fix the B2A09 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2A09 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2A09 Subaru — Telematics I-Call Button 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 B2A09 Code

1. What does the OBDII code B2A09 mean?

B2A09 refers to a fault in the Telematics I-Call button circuit, which is part of the vehicle's telematics system used for emergency or information calls.

2. What are the symptoms of code B2A09?

Common symptoms include the I-Call button not responding, telematics system malfunction warnings, or inability to initiate emergency or assistance calls.

3. What causes the B2A09 code to appear?

Possible causes include a faulty I-Call button, damaged wiring or connectors in the circuit, or a malfunctioning telematics control module.

4. Can the B2A09 code affect vehicle operation?

No, this code typically does not affect vehicle drivability but can impact the functionality of the telematics or emergency communication system.

5. How is the B2A09 code diagnosed?

A technician will inspect the I-Call button and its wiring, check for open or short circuits, and test the telematics control module for proper operation.

6. Can I fix the B2A09 code myself?

If you are comfortable, you can check for loose or damaged wires near the I-Call button. However, more complex diagnostics and repairs may require professional assistance.

7. Is a malfunctioning telematics system the only cause of B2A09?

Not necessarily. Physical damage to the I-Call button, poor electrical connections, or software issues in the control module can also trigger this code.

8. How much does it cost to repair the B2A09 code?

Repair costs vary but typically range from $100 to $500, depending on whether the issue is wiring-related or requires replacement of the telematics module.

9. Can the B2A09 code clear itself?

The code may clear temporarily if the issue is intermittent, but it will likely return if the underlying problem is not resolved.

10. What happens if I ignore the B2A09 code?

Ignoring the code may result in the telematics system being unable to provide emergency assistance, which could pose a safety risk in critical situations.