B279A 2013 Toyota RAV4 Code - Theft Deterrent System Communication Line High Fixation
Quick Answer
The Diagnostic Trouble Code (DTC) will be set in the Engine Control Module (ECM) when the communication line (IMI - EFIO) between the Engine Control Module and the Certification ECU (Smart Key ECU Assembly) is stuck high. Common causes include Faulty Certification ECU (Smart Key ECU Assembly), Certification ECU harness is open or shorted, Certification ECU 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
- B279A 2013 Toyota RAV4 indicates Theft Deterrent System Communication Line High Fixation.
- Common causes
- Common causes include Faulty Certification ECU (Smart Key ECU Assembly), Certification ECU harness is open or shorted, Certification ECU 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.
Code B279A 2013 Toyota RAV4 Description
What are the Possible Causes of the DTC B279A 2013 Toyota RAV4?
- Faulty Certification ECU (Smart Key ECU Assembly)
- Certification ECU harness is open or shorted
- Certification ECU circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC B279A 2013 Toyota RAV4?
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 B279A 2013 Toyota RAV4 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 B279A 2013 Toyota RAV4 code?
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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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