B279C 2016 Toyota RAV4 Code - Theft Deterrent System Presence Detection
Quick Answer
This Diagnostic Trouble Code (DTC) is stored when an Engine Control Module (ECM) that is incompatible with the immobiliser system is installed in the vehicle. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control 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
- B279C 2016 Toyota RAV4 indicates Theft Deterrent System Presence Detection.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control 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.
Code B279C 2016 Toyota RAV4 Description
What are the Possible Causes of the DTC B279C 2016 Toyota RAV4?
- Faulty Engine Control Module (ECM)
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
How to Fix the DTC B279C 2016 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 B279C 2016 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 B279C 2016 Toyota RAV4 code?
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Need Help with the Code?
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Frequently Asked Questions about B279C 2016 Toyota RAV4 Code
1. What does the OBDII code B279C mean on a 2016 Toyota RAV4?
B279C indicates an issue with the Theft Deterrent System Presence Detection, typically related to a communication or detection fault in the immobilizer system.
2. What are the common symptoms of the B279C code in a 2016 Toyota RAV4?
Common symptoms include the engine not starting, the security light staying on or flashing, and possible communication errors with the immobilizer system.
3. What causes the B279C code to appear in a Toyota RAV4?
The code can be triggered by a malfunctioning immobilizer system, damaged wiring or connectors, a faulty key fob, or a failed Engine Control Module (ECM).
4. How do I diagnose the B279C code in my Toyota RAV4?
Diagnosis involves scanning for codes, inspecting immobilizer system wiring and connectors for damage, testing the key fob, and ensuring proper communication between the ECM and immobilizer.
5. Can a dead key fob battery trigger the B279C code?
Yes, a dead or weak key fob battery can cause communication issues, potentially triggering the B279C code.
6. How can I fix the B279C code on my 2016 Toyota RAV4?
Repairs may include reprogramming the key fob, repairing or replacing damaged wiring, resetting the immobilizer system, or replacing the ECM if necessary.
7. Is the B279C code a serious issue?
Yes, it can prevent the vehicle from starting, so addressing it promptly is important to ensure your vehicle’s functionality and security.
8. Can I clear the B279C code without repairing the issue?
Clearing the code without fixing the underlying problem will likely cause it to return. Proper diagnosis and repair are necessary.
9. Does the B279C code mean my 2016 Toyota RAV4 has been tampered with?
Not necessarily. The code typically points to a system malfunction rather than tampering but should still be investigated to rule out potential security concerns.
10. Can a professional locksmith fix the B279C code issue?
Yes, a professional locksmith with expertise in vehicle security systems might be able to diagnose and repair issues related to the immobilizer and key programming.
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