B27A8 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 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.
Code B27A8 Description
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.
What are the Possible Causes of the DTC B27A8?
- 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?
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 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 Makes
- B27A8 Infiniti — Mode Door Motor
- B27A8 Lexus — Open In Outside Luggage Compartment Electrical Key Antenna Circuit
- B27A8 Nissan — Mode Door Motor
- B27A8 Scion — Open In Outside Luggage Compartment Electrical Key Antenna Circuit
- B27A8 Toyota — Open In Outside Luggage Compartment Electrical Key Antenna Circuit
Frequently Asked Questions about B27A8 Code
1. What are common symptoms of OBDII code B27A8?
- Common symptoms include issues with the keyless entry system, difficulty unlocking or locking the vehicle using the key fob, and intermittent or complete failure of the remote key function.
2. What causes OBDII code B27A8 to trigger?
- This code is triggered when there is an open circuit in the electrical key antenna circuit located in the outside luggage compartment of the vehicle.
3. How can I diagnose the issue related to OBDII code B27A8?
- Diagnosis typically involves inspecting the key antenna wiring and connections in the outside luggage compartment, checking for any visible damage or loose connections.
4. Can a DIY enthusiast repair OBDII code B27A8 at home?
- Repairing this code may require advanced electrical knowledge and specialized tools, making it more suitable for professional technicians. However, visually inspecting the wiring and connections can be a good starting point.
5. Is it safe to continue driving with OBDII code B27A8 present?
- While the vehicle may still be operable with this code present, it is recommended to address the issue promptly to avoid potential inconvenience or safety concerns related to the keyless entry system.
6. Are there any temporary fixes for OBDII code B27A8?
- Temporary fixes such as resetting the code using an OBDII scanner may clear the warning temporarily, but the underlying issue causing the code will need to be addressed for a permanent solution.
7. How much does it typically cost to repair OBDII code B27A8?
- The cost of repair can vary depending on the extent of the damage and whether any parts need to be replaced. It is advisable to consult a professional for an accurate estimate.
8. Can extreme weather conditions contribute to triggering OBDII code B27A8?
- Yes, extreme weather conditions such as heavy rain or extreme temperatures can potentially damage the key antenna wiring in the outside luggage compartment, leading to an open circuit.
9. Will fixing OBDII code B27A8 affect other electrical components in the vehicle?
- Fixing this code should only affect the key antenna circuit and related components. However, it is important to ensure that all connections are properly secured to prevent any further issues.
10. How long does it take to repair OBDII code B27A8?
- The repair time can vary depending on the exact cause of the issue and the complexity of accessing the key antenna circuit in the outside luggage compartment. In general, it may take a few hours to complete the repair.
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