Engine-CodesToyota – B279A 2016 Toyota RAV4

B279A 2016 Toyota RAV4 Code - Theft Deterrent System Communication Line High Fixation

Quick Answer

The B279A diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates a problem with the theft deterrent system communication line being stuck in a high voltage state. Common causes include Faulty theft deterrent system control module, Wiring or connection issues in the communication line, Malfunctioning keyless entry system. 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
B279A 2016 Toyota RAV4 indicates Theft Deterrent System Communication Line High Fixation.
Common causes
Common causes include Faulty theft deterrent system control module, Wiring or connection issues in the communication line, Malfunctioning keyless entry system.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B279A 2016 Toyota RAV4 Description

The B279A diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates a problem with the theft deterrent system communication line being stuck in a high voltage state. This code is typically triggered when the communication line between the various components of the theft deterrent system, such as the keyless entry system, immobilizer, and alarm system, is not functioning properly.

OBDII Code B279A 2016 Toyota RAV4 - Theft Deterrent System Communication Line High Fixation
B279A 2016 Toyota RAV4 Code - Theft Deterrent System Communication Line High Fixation

Common Causes of B279A 2016 Toyota RAV4

  1. Faulty theft deterrent system control module
  2. Wiring or connection issues in the communication line
  3. Malfunctioning keyless entry system
  4. Immobilizer system malfunction
  5. Faulty alarm system components

Symptoms of B279A 2016 Toyota RAV4

  1. Engine starting issues
  2. Inability to unlock doors remotely
  3. Alarm system not arming or disarming correctly
  4. Vehicle going into fail-safe mode
  5. Security light flashing on the dashboard

How to Fix B279A 2016 Toyota RAV4

  1. Perform a thorough inspection of the theft deterrent system components and wiring to identify any visible damage or loose connections.
  2. Use a diagnostic scanner to retrieve the specific trouble codes and pinpoint the exact cause of the communication line high fixation.
  3. Test the theft deterrent system control module and other related components for proper functionality.
  4. Repair or replace any damaged wiring, connectors, or components as needed.
  5. Clear the DTCs from the vehicle's memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix B279A 2016 Toyota RAV4

The typical repair costs for addressing a B279A code on a 2016 Toyota RAV4 can vary depending on the specific cause of the issue. In general, the cost of parts and labor for this repair could range from $200 to $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates typically range from $80 to $150 per hour, with rates potentially higher at dealerships or in metropolitan areas, and lower at independent shops. For a more accurate estimate, it's recommended to consult with a local auto repair shop.

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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 B279A 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B279A in a 2016 Toyota RAV4?

- The common symptoms include issues with starting the vehicle, the security light staying on, and the inability to disarm the theft deterrent system.

2. What can cause the OBDII code B279A to trigger in a 2016 Toyota RAV4?

- The code B279A is often triggered by a communication line high fixation within the theft deterrent system, indicating a potential wiring or connection issue.

3. How can I diagnose the OBDII code B279A in my 2016 Toyota RAV4?

- Diagnosing the B279A code involves checking the wiring and connections related to the theft deterrent system, as well as using a diagnostic scanner to pinpoint the exact issue.

4. Is it safe to continue driving my 2016 Toyota RAV4 with the B279A code present?

- It is not recommended to drive the vehicle with the B279A code active, as it may lead to potential security system malfunctions or starting issues.

5. What are some repair tips for fixing the OBDII code B279A in a 2016 Toyota RAV4?

- Repair tips include checking and repairing any damaged wiring, ensuring proper connections, and resetting the theft deterrent system after addressing the issue.

6. Can a DIY enthusiast fix the OBDII code B279A in a 2016 Toyota RAV4?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, resolving the B279A code may require specialized tools and knowledge best handled by a professional mechanic.

7. How much does it typically cost to repair the OBDII code B279A in a 2016 Toyota RAV4?

- The cost of repairing the B279A code can vary depending on the extent of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Will resetting the OBDII code B279A in my 2016 Toyota RAV4 make it go away permanently?

- Simply resetting the code may temporarily clear the fault, but if the underlying issue causing the B279A code is not addressed, it is likely to reappear.

9. Are there any preventive measures to avoid the OBDII code B279A in a 2016 Toyota RAV4?

- Regularly inspecting and maintaining the theft deterrent system components, such as wiring and connections, can help prevent issues that may trigger the B279A code.

10. How long does it usually take to fix the OBDII code B279A in a 2016 Toyota RAV4?

- The repair time for the B279A code can vary depending on the exact cause and complexity of the issue, but it may take a few hours to a full day for a mechanic to diagnose and fix the problem.

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