Engine-CodesToyota – B279A 2013 Toyota RAV4

B279A 2013 Toyota RAV4 Code - Theft Deterrent System Communication Line High Fixation

Quick Answer

The B279A diagnostic trouble code (DTC) in a 2013 Toyota RAV4 indicates a problem with the theft deterrent system communication line being stuck in a high state. Common causes include Faulty theft deterrent system communication module, Wiring harness issues or damaged wiring affecting the communication line, Corrosion or poor connections in the communication line. 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 2013 Toyota RAV4 indicates Theft Deterrent System Communication Line High Fixation.
Common causes
Common causes include Faulty theft deterrent system communication module, Wiring harness issues or damaged wiring affecting the communication line, Corrosion or poor connections in the communication line.
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 11, 2024
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Code B279A 2013 Toyota RAV4 Description

The B279A diagnostic trouble code (DTC) in a 2013 Toyota RAV4 indicates a problem with the theft deterrent system communication line being stuck in a high state. This issue can impact the vehicle's ability to communicate effectively with the theft deterrent system, which is designed to prevent unauthorized access to the vehicle.

OBDII Code B279A 2013 Toyota RAV4 - Theft Deterrent System Communication Line High Fixation
B279A 2013 Toyota RAV4 Code - Theft Deterrent System Communication Line High Fixation

Common Causes of B279A 2013 Toyota RAV4

  1. Faulty theft deterrent system communication module
  2. Wiring harness issues or damaged wiring affecting the communication line
  3. Corrosion or poor connections in the communication line
  4. Software or programming issues within the theft deterrent system
  5. Electrical interference or electromagnetic interference affecting the communication line

Symptoms of B279A 2013 Toyota RAV4

  1. Inability to arm or disarm the theft deterrent system
  2. False alarms triggered by the system
  3. Theft deterrent system warning light illuminated on the dashboard
  4. Vehicle immobilization due to the theft deterrent system malfunction
  5. Erratic behavior of the theft deterrent system, such as randomly activating or deactivating

How to Fix B279A 2013 Toyota RAV4

  1. Perform a thorough inspection of the theft deterrent system communication line and connectors to check for any visible damage, corrosion, or poor connections.
  2. Test the communication line for continuity and resistance to identify any faults or breaks in the wiring.
  3. Check the theft deterrent system communication module for proper functioning and replace if necessary.
  4. Clear the DTC from the vehicle's computer system using a diagnostic scanner.
  5. Test the theft deterrent system to ensure proper communication and functionality after repairs are completed.

Cost to Fix B279A 2013 Toyota RAV4

The cost of repairing a B279A code related to the theft deterrent system communication line high fixation in a 2013 Toyota RAV4 can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. In general, the repair cost for this type of issue can range from $150 to $400, including parts and labor.

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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 2013 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B279A in a 2013 Toyota RAV4?

The common symptoms include issues with starting the vehicle, the engine not turning over, and the theft deterrent system warning light being illuminated on the dashboard.

2. What does OBDII code B279A indicate in a 2013 Toyota RAV4?

Code B279A indicates a problem with the theft deterrent system communication line being in a high fixation state, meaning there is a communication issue within the system.

3. What are the possible causes of OBDII code B279A in a 2013 Toyota RAV4?

Possible causes include a faulty theft deterrent system control module, wiring issues in the communication line, or a problem with the key transponder.

4. How can I diagnose OBDII code B279A in my 2013 Toyota RAV4?

Diagnosing this code may require using a scan tool to retrieve the specific details of the fault, checking the wiring for any damage or corrosion, and testing the components of the theft deterrent system for proper operation.

5. Can I fix OBDII code B279A in my 2013 Toyota RAV4 by myself?

While some basic checks like inspecting the wiring connections can be done by DIY enthusiasts, diagnosing and repairing the root cause of this code may require specialized tools and expertise, so it's recommended to consult a professional mechanic.

6. Is it safe to continue driving my 2013 Toyota RAV4 with OBDII code B279A present?

It is not advisable to continue driving the vehicle with this code active, as it may lead to potential issues with starting the engine or the theft deterrent system not functioning properly.

7. How much does it typically cost to repair OBDII code B279A in a 2013 Toyota RAV4?

The cost of repair can vary depending on the exact cause of the code, but it may range from a couple of hundred dollars for basic fixes to more expensive repairs involving module replacements or extensive wiring repairs.

8. Can a dead battery trigger OBDII code B279A in a 2013 Toyota RAV4?

A dead or weak battery can potentially cause communication issues within the theft deterrent system, leading to the activation of code B279A. Ensuring the battery is in good condition is a good practice when troubleshooting this code.

9. Will resetting the OBDII system clear code B279A from a 2013 Toyota RAV4?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code B279A is not addressed, the code is likely to reappear once the problem resurfaces.

10. How long does it take to repair OBDII code B279A in a 2013 Toyota RAV4?

The repair time can vary depending on the complexity of the issue and the availability of parts. Simple fixes like reconnecting loose wiring may take a short time, while more involved repairs could take several hours to complete.

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