B27A6 Toyota Code - Open In Rear Floor Electrical Key Oscillator Circuit
Quick Answer
The Certification ECU (Smart Key ECU Assembly) generates a request signal and sends it to the Indoor Electrical Key Oscillator (for center floor). Common causes include Faulty Indoor Electrical Key Oscillator (for center floor), Indoor Electrical Key Oscillator harness is open or shorted, Indoor 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
- B27A6 Toyota indicates Open In Rear Floor Electrical Key Oscillator Circuit.
- Common causes
- Common causes include Faulty Indoor Electrical Key Oscillator (for center floor), Indoor Electrical Key Oscillator harness is open or shorted, Indoor 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.
Code B27A6 Toyota Description
The Diagnostic Trouble Code (DTC) B27A6 is detected by the Certification ECU (Smart Key ECU Assembly) when an open circuit occurs between the Certification ECU (Smart Key ECU Assembly) and Indoor Electrical Key Oscillator (for center floor) terminals.
What are the Possible Causes of the DTC B27A6 Toyota?
- Faulty Indoor Electrical Key Oscillator (for center floor)
- Indoor Electrical Key Oscillator harness is open or shorted
- Indoor Electrical Key Oscillator circuit poor electrical connection
- Faulty Certification ECU (Smart Key ECU Assembly)
How to Fix the DTC B27A6 Toyota?
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 B27A6 Toyota 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.
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Information for Specific Toyota Models
- B27A6 2013 Toyota RAV4 — Open In Rear Floor Electrical Key Oscillator Circuit
- B27A6 2014 Toyota RAV4 — Open In Rear Floor Electrical Key Oscillator Circuit
- B27A6 2015 Toyota RAV4 — Open In Rear Floor Electrical Key Oscillator Circuit
- B27A6 2016 Toyota RAV4 — Open In Rear Floor Electrical Key Oscillator Circuit
- B27A6 2017 Toyota RAV4 — Open In Rear Floor Electrical Key Oscillator Circuit
- B27A6 2018 Toyota RAV4 — Open In Rear Floor Electrical Key Oscillator Circuit
Frequently Asked Questions about B27A6 Toyota Code
What does the OBDII code B27A6 mean for my Toyota?
The OBDII code B27A6 indicates an issue with the Open In Rear Floor Electrical Key Oscillator Circuit, which is related to the vehicle's keyless entry system.
What are the common symptoms of the B27A6 code?
Common symptoms include the inability to unlock the doors remotely, the key fob not being recognized, and the vehicle not starting in some cases.
What could cause the B27A6 code to trigger?
Potential causes include a faulty key oscillator, damaged wiring or connectors, or a malfunctioning body control module.
How can I diagnose the B27A6 code?
To diagnose the B27A6 code, inspect the rear floor electrical connections, check the key oscillator for proper function, and test the wiring for continuity and shorts.
Is it safe to drive my Toyota with the B27A6 code?
While it may be safe to drive, you may experience issues with the keyless entry system and starting the vehicle, so it’s best to address the issue promptly.
What repairs might be needed for the B27A6 code?
Repairs may include replacing the key oscillator, repairing or replacing damaged wiring, or reprogramming the body control module if necessary.
Can I clear the B27A6 code myself?
Yes, you can use an OBDII scanner to clear the code, but if the underlying issue is not fixed, the code will likely return.
How much does it typically cost to fix the B27A6 code?
The cost can vary widely depending on the specific issue, but repairs may range from $100 to $500, depending on parts and labor needed.
Should I take my Toyota to a dealership for B27A6 code issues?
While you can take it to a dealership for specialized knowledge, many independent mechanics can also diagnose and fix this issue effectively.
Discuss the causes and fixes for B27A6 Toyota OBDII Code
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