B27BB Code - Electric Compressor High Voltage System
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the voltage of other than standard value is input to AC inverter. Common causes include Faulty Electric Compressor, Electric Compressor harness is open or shorted, Electric Compressor 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
- B27BB indicates Electric Compressor High Voltage System.
- Common causes
- Common causes include Faulty Electric Compressor, Electric Compressor harness is open or shorted, Electric Compressor 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 B27BB Description
What are the Possible Causes of the DTC B27BB?
- Faulty Electric Compressor
- Electric Compressor harness is open or shorted
- Electric Compressor circuit poor electrical connection
- Faulty Li-ion Battery
- Faulty Power Delivery Module (PDM)
How to Fix the DTC B27BB?
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 B27BB 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 B27BB code?
Need more information on how to fix the B27BB code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B27BB code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B27BB Infiniti — Electric Compressor High Voltage System
- B27BB Nissan — Electric Compressor High Voltage System
Frequently Asked Questions about B27BB Code
1. What does OBDII code B27BB mean?
Code B27BB indicates an issue with the high voltage system of the electric compressor, often related to the HVAC system in hybrid or electric vehicles.
2. What are common symptoms of a B27BB code?
Symptoms include reduced or no air conditioning performance, warning lights on the dashboard, or unusual noises from the electric compressor.
3. What causes the B27BB code to appear?
This code can be triggered by a high voltage system fault, damaged wiring, a defective electric compressor, or issues with the power supply.
4. Can I drive my car with a B27BB code?
While the vehicle may still be drivable, ignoring the code can lead to further damage to the HVAC system or high voltage components.
5. How is the B27BB code diagnosed?
A technician will use a scan tool to confirm the code, inspect the high voltage connections, check for damaged wiring, and test the electric compressor for functionality.
6. What repairs are needed to fix a B27BB code?
Repairs may include replacing the electric compressor, repairing or replacing damaged wiring, or resolving any issues with the high voltage power supply.
7. How much does it cost to fix a B27BB code?
The cost varies depending on the issue but can range from $500 to $2,000, with compressor replacement being the most expensive repair.
8. Can a faulty battery cause a B27BB code?
Yes, a failing high voltage battery or poor electrical connections can contribute to this code.
9. How can I prevent a B27BB code from occurring?
Regular maintenance of the HVAC system, inspecting high voltage wiring, and promptly addressing warning lights can help prevent this issue.
10. Does the B27BB code affect the vehicle's performance?
While it primarily impacts the HVAC system, prolonged issues can strain the high voltage system, potentially affecting overall vehicle performance.
Discuss the causes and fixes for B27BB OBDII Code
Code B27BB comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
