AutoCodes – Toyota – B27A8 2013 Toyota RAV4

B27A8 2013 Toyota RAV4 Code - Open In Outside Luggage Compartment Electrical Key Antenna Circuit

Quick Answer

The Certification ECU (Smart Key ECU Assembly) generates a request signal and sends it to the Outside Electrical Key Oscillator (for rear side). Common causes include Faulty Outside Electrical Key Oscillator (for rear side), Outside Electrical Key Oscillator harness is open or shorted, Outside Electrical Key Oscillator 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
B27A8 2013 Toyota RAV4 indicates Open In Outside Luggage Compartment Electrical Key Antenna Circuit.
Common causes
Common causes include Faulty Outside Electrical Key Oscillator (for rear side), Outside Electrical Key Oscillator harness is open or shorted, Outside Electrical Key Oscillator 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 399
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 18, 2023
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Code B27A8 2013 Toyota RAV4 Description

The Certification ECU (Smart Key ECU Assembly) generates a request signal and sends it to the Outside Electrical Key Oscillator (for rear side). To detect the key near the driver door, the Outside Electrical Key Oscillator (for rear side) creates a detection area towards the area approximately 1.0 m (3.28 ft.) from the back door.
The Diagnostic Trouble Code (DTC) B27A8 is detected by the Certification ECU (Smart Key ECU Assembly) when an open circuit occurs between the Certification ECU (Smart Key ECU Assembly) and Outside Electrical Key Oscillator (for rear side) terminals.
OBDII Code B27A8 2013 Toyota RAV4 - Open In Outside Luggage Compartment Electrical Key Antenna Circuit - AutoCodes.com
B27A8 2013 Toyota RAV4 Code - Open In Outside Luggage Compartment Electrical Key Antenna Circuit

What are the Possible Causes of the DTC B27A8 2013 Toyota RAV4?

  • Faulty Outside Electrical Key Oscillator (for rear side)
  • Outside Electrical Key Oscillator harness is open or shorted
  • Outside Electrical Key Oscillator circuit poor electrical connection
  • Faulty Certification ECU (Smart Key ECU Assembly)

How to Fix the DTC B27A8 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 B27A8 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 B27A8 2013 Toyota RAV4 code?

Need more information on how to fix the B27A8 2013 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B27A8 2013 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B27A8 in a 2013 Toyota RAV4?

The common symptoms of code B27A8 include issues with the keyless entry system, difficulty starting the vehicle, and sporadic operation of the key fob.

2. What does the OBDII code B27A8 "Open In Outside Luggage Compartment Electrical Key Antenna Circuit" mean?

This code indicates a problem with the electrical key antenna circuit located in the outside luggage compartment of the 2013 Toyota RAV4.

3. What are the possible causes of OBDII code B27A8 in a 2013 Toyota RAV4?

The code B27A8 can be triggered by a faulty key antenna, damaged wiring in the electrical circuit, a disconnected antenna, or water damage in the luggage compartment.

4. How can I diagnose the OBDII code B27A8 in my 2013 Toyota RAV4?

To diagnose the B27A8 code, you can use an OBDII scanner to read the code, inspect the key antenna and wiring for any visible damage, and test the antenna circuit for continuity.

5. Can I still drive my 2013 Toyota RAV4 with the OBDII code B27A8 active?

It is generally safe to drive the vehicle with the B27A8 code, but you may experience issues with the keyless entry system and starting the vehicle until the problem is resolved.

6. How can I repair the OBDII code B27A8 in my 2013 Toyota RAV4?

Repairing the B27A8 code may involve replacing the key antenna, repairing damaged wiring, reconnecting any disconnected components, or drying out the luggage compartment if water damage is detected.

7. Is it recommended to reset the OBDII code B27A8 after making repairs?

Yes, it is recommended to clear the B27A8 code after completing the necessary repairs to see if the issue has been resolved. This can be done using an OBDII scanner.

8. Are there any maintenance tips to prevent OBDII code B27A8 from occurring in my 2013 Toyota RAV4?

Regularly inspecting the key antenna and wiring for any signs of wear or damage, keeping the outside luggage compartment dry, and avoiding physical damage to the antenna can help prevent the B27A8 code.

9. Can a DIY enthusiast fix the OBDII code B27A8 in a 2013 Toyota RAV4?

Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the B27A8 code by following the vehicle's service manual and using appropriate procedures.

10. Is it necessary to visit a dealership for OBDII code B27A8 repairs in a 2013 Toyota RAV4?

While visiting a dealership is not always necessary, they have trained technicians and specialized equipment that can efficiently diagnose and repair complex electrical issues like the B27A8 code in a 2013 Toyota RAV4.

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